My votes go for:
Sonic Adventure - Azure Blue World (Emerald Coast 1)
https://www.youtube.com/watch?v=-Z3MzUZ5isQ
Sonic Adventure - Windy Hill (Windy Valley 1)
https://www.youtube.com/watch?v=yZAIjeiMMsc
Sonic Adventure - The Air (Windy Valley 3)
https://www.youtube.com/watch?v=WZ9XcWiaWvQ
Sonic Adventure - Pleasure Castle (Twinkle Park 2)
https://www.youtube.com/watch?v=29nzRBtKpuc
Sonic Adventure - Dilapidated Way (Casinopolis Sewers)
https://www.youtube.com/watch?v=kMNwmfgxPAs
Sonic Adventure - Millitant Missionary (Theme of Egg Viper)
https://www.youtube.com/watch?v=ByzcJs-Fczk
Sonic Adventure - Crank the Heat Up!! (Final Egg 2)
https://www.youtube.com/watch?v=emFqi13p1wk
Sonic Adventure - Red Barrage Area (Hot Shelter 1)
https://www.youtube.com/watch?v=XksloRrc80Q
Sonic Adventure - Tricky Maze (Lost World 1)
https://www.youtube.com/watch?v=mo7lj4s6aRk
Sonic Adventure - Skydeck A Go! Go! (Skydeck 1, and best music ever.)
https://www.youtube.com/watch?v=HquRBWLh4oc
Sonic Adventure - Bad Taste Aquarium (Hot Shelter 2)
https://www.youtube.com/watch?v=VMM5t0YttEg
Sonic Adventure - Run Through the Speed Highway (Speed Highway 1)
https://www.youtube.com/watch?v=ejrmmNXuFNY
Sonic Adventure 2 - Tresspasser (Lost Colony)
https://www.youtube.com/watch?v=0qC1RhcMcUY
Sonic Adventure 2 - Unstable World (Crazy Gadget)
https://www.youtube.com/watch?v=e3OQ9q3GjtU
Sonic Adventure 2 - Won't Stop, Just Go! (Green Forest)
https://www.youtube.com/watch?v=lg0Dwxc9UkA
Sonic Adventure 2 - Escape From The City (City Escape)
https://www.youtube.com/watch?v=8pTMv3t9GCw
Sonic Adventure 2 - That's The Way I Like It (Metal Harbor)
https://www.youtube.com/watch?v=obHWLr1jxY8
Sonic Adventure 2 - It Doesn't Matter (Sonic's Theme)
https://www.youtube.com/watch?v=h2FD92_lYGg
Sonic Adventure 2 - Throw It All Away (Shadow's Theme)
https://www.youtube.com/watch?v=H0y4kJ_DxyA
Sonic Adventure 2 - Supporting Me (Biolizard)
https://www.youtube.com/watch?v=kLwZ9sDbDyk
Sonic Adventure 2 - Highway In The Sky (Final Rush)
https://www.youtube.com/watch?v=UJ2bQy4dbUY
Sonic Adventure 2 - Mr. Unsmiley (Sky Rail)
https://www.youtube.com/watch?v=xcV6pVxMUjE
Sonic Adventure 2 - Shut Up Faker! (Vs. at Green Forest)
https://www.youtube.com/watch?v=GbqqBbyBoG8
Sonic Adventure 2 - Scramble For The Core (Cannon's Core, Tails and Eggman ver.)
https://www.youtube.com/watch?v=gNqUI-VLgsE
Sonic Adventure 2 - Keys The Ruin (Pyramid Cave)
https://www.youtube.com/watch?v=tcd8OljtFXk
Sonic Adventure 2 - Rhythm and Balance (White Jungle)
https://www.youtube.com/watch?v=5BE84V987NQ
Sonic Adventure 2 - Vengence is Mine (Radical Highway)
https://www.youtube.com/watch?v=Dtqgi3vYpx8
Sonic Adventure 2 - This Way Out (Prison Lane)
https://www.youtube.com/watch?v=t7HwPLg7LtI
Sonic Adventure 2 - Rumbling HWY (Mission Street)
https://www.youtube.com/watch?v=Wrxs2r-ZOAE
Sonic Adventure 2 - On The Edge (Eternal Engine)
https://www.youtube.com/watch?v=uxR5_ZGY9LY
Sonic Advance 2 - Boss
https://www.youtube.com/watch?v=B7blThV8mco
Sonic Advance 3 - Nonaggression Zone (EX Boss)
https://www.youtube.com/watch?v=Sg0U8wHpcz4
Sonic Advance - Egg Rocket Zone (Zone 6-1)
https://www.youtube.com/watch?v=9ixg96gKPz8
MegaMan ZX - Pallida Mors (Serpent Battle 2)
https://www.youtube.com/watch?v=kbC8TG4eQ7s
MegaMan ZX - Gauntlet (Theme of Area L)
https://www.youtube.com/watch?v=uxmscNEFkdQ
MegaMan ZX - Cinq Ville - c'est notre espoir (Theme of Area D)
https://www.youtube.com/watch?v=zRZTwRBfiOA
MegaMan ZX - Trap Factory (Theme of Prometheus/Pandora)
https://www.youtube.com/watch?v=in_Qst_e8zI
MegaMan ZX - Cannon Ball -Hard Revenge- (Fight against Omega Zero)
https://www.youtube.com/watch?v=2bj2ZjmfFJQ
MegaMan ZX - Rockin' On (Boss Theme)
https://www.youtube.com/watch?v=LmwX4hkJiM8
MegaMan ZX Advent - Trap Phantasm (Theme of Prometheus/Pandora)
https://www.youtube.com/watch?v=VkeTPE2LqDw
MegaMan ZX Advent - Slam Down (Boss Battle)
https://www.youtube.com/watch?v=OGzc2KPO3zY
MegaMan ZX Advent - Twisted Vine (Theme of Rospark)
https://www.youtube.com/watch?v=dWPtiKo20PY
MegaMan ZX Advent - Be One (Theme of Ashe)
https://www.youtube.com/watch?v=CJu4-P24TG8
MegaMan ZX Advent - Destiny (Theme of Grey)
https://www.youtube.com/watch?v=Cy6f35BX38g
MegaMan ZX Advent - Rush Trash Squash (Theme of Vulturon)
https://www.youtube.com/watch?v=sNv4dFyNBEQ
MegaMan ZX Advent - Drifting Floe (Theme of Chronoforce)
https://www.youtube.com/watch?v=sB8LI9dDLio
MegaMan ZX Advent - The Wind (Theme of Aeolus)
https://www.youtube.com/watch?v=-tDhmYUXPRU
MegaMan ZX Advent - Determined Eyes (Theme of Vent/Aile)
https://www.youtube.com/watch?v=W23t3jgWFCk
So many links, your head will spin.
Sonic Adventure - Azure Blue World (Emerald Coast 1)
https://www.youtube.com/watch?v=-Z3MzUZ5isQ
Sonic Adventure - Windy Hill (Windy Valley 1)
https://www.youtube.com/watch?v=yZAIjeiMMsc
Sonic Adventure - The Air (Windy Valley 3)
https://www.youtube.com/watch?v=WZ9XcWiaWvQ
Sonic Adventure - Pleasure Castle (Twinkle Park 2)
https://www.youtube.com/watch?v=29nzRBtKpuc
Sonic Adventure - Dilapidated Way (Casinopolis Sewers)
https://www.youtube.com/watch?v=kMNwmfgxPAs
Sonic Adventure - Millitant Missionary (Theme of Egg Viper)
https://www.youtube.com/watch?v=ByzcJs-Fczk
Sonic Adventure - Crank the Heat Up!! (Final Egg 2)
https://www.youtube.com/watch?v=emFqi13p1wk
Sonic Adventure - Red Barrage Area (Hot Shelter 1)
https://www.youtube.com/watch?v=XksloRrc80Q
Sonic Adventure - Tricky Maze (Lost World 1)
https://www.youtube.com/watch?v=mo7lj4s6aRk
Sonic Adventure - Skydeck A Go! Go! (Skydeck 1, and best music ever.)
https://www.youtube.com/watch?v=HquRBWLh4oc
Sonic Adventure - Bad Taste Aquarium (Hot Shelter 2)
https://www.youtube.com/watch?v=VMM5t0YttEg
Sonic Adventure - Run Through the Speed Highway (Speed Highway 1)
https://www.youtube.com/watch?v=ejrmmNXuFNY
Sonic Adventure 2 - Tresspasser (Lost Colony)
https://www.youtube.com/watch?v=0qC1RhcMcUY
Sonic Adventure 2 - Unstable World (Crazy Gadget)
https://www.youtube.com/watch?v=e3OQ9q3GjtU
Sonic Adventure 2 - Won't Stop, Just Go! (Green Forest)
https://www.youtube.com/watch?v=lg0Dwxc9UkA
Sonic Adventure 2 - Escape From The City (City Escape)
https://www.youtube.com/watch?v=8pTMv3t9GCw
Sonic Adventure 2 - That's The Way I Like It (Metal Harbor)
https://www.youtube.com/watch?v=obHWLr1jxY8
Sonic Adventure 2 - It Doesn't Matter (Sonic's Theme)
https://www.youtube.com/watch?v=h2FD92_lYGg
Sonic Adventure 2 - Throw It All Away (Shadow's Theme)
https://www.youtube.com/watch?v=H0y4kJ_DxyA
Sonic Adventure 2 - Supporting Me (Biolizard)
https://www.youtube.com/watch?v=kLwZ9sDbDyk
Sonic Adventure 2 - Highway In The Sky (Final Rush)
https://www.youtube.com/watch?v=UJ2bQy4dbUY
Sonic Adventure 2 - Mr. Unsmiley (Sky Rail)
https://www.youtube.com/watch?v=xcV6pVxMUjE
Sonic Adventure 2 - Shut Up Faker! (Vs. at Green Forest)
https://www.youtube.com/watch?v=GbqqBbyBoG8
Sonic Adventure 2 - Scramble For The Core (Cannon's Core, Tails and Eggman ver.)
https://www.youtube.com/watch?v=gNqUI-VLgsE
Sonic Adventure 2 - Keys The Ruin (Pyramid Cave)
https://www.youtube.com/watch?v=tcd8OljtFXk
Sonic Adventure 2 - Rhythm and Balance (White Jungle)
https://www.youtube.com/watch?v=5BE84V987NQ
Sonic Adventure 2 - Vengence is Mine (Radical Highway)
https://www.youtube.com/watch?v=Dtqgi3vYpx8
Sonic Adventure 2 - This Way Out (Prison Lane)
https://www.youtube.com/watch?v=t7HwPLg7LtI
Sonic Adventure 2 - Rumbling HWY (Mission Street)
https://www.youtube.com/watch?v=Wrxs2r-ZOAE
Sonic Adventure 2 - On The Edge (Eternal Engine)
https://www.youtube.com/watch?v=uxR5_ZGY9LY
Sonic Advance 2 - Boss
https://www.youtube.com/watch?v=B7blThV8mco
Sonic Advance 3 - Nonaggression Zone (EX Boss)
https://www.youtube.com/watch?v=Sg0U8wHpcz4
Sonic Advance - Egg Rocket Zone (Zone 6-1)
https://www.youtube.com/watch?v=9ixg96gKPz8
MegaMan ZX - Pallida Mors (Serpent Battle 2)
https://www.youtube.com/watch?v=kbC8TG4eQ7s
MegaMan ZX - Gauntlet (Theme of Area L)
https://www.youtube.com/watch?v=uxmscNEFkdQ
MegaMan ZX - Cinq Ville - c'est notre espoir (Theme of Area D)
https://www.youtube.com/watch?v=zRZTwRBfiOA
MegaMan ZX - Trap Factory (Theme of Prometheus/Pandora)
https://www.youtube.com/watch?v=in_Qst_e8zI
MegaMan ZX - Cannon Ball -Hard Revenge- (Fight against Omega Zero)
https://www.youtube.com/watch?v=2bj2ZjmfFJQ
MegaMan ZX - Rockin' On (Boss Theme)
https://www.youtube.com/watch?v=LmwX4hkJiM8
MegaMan ZX Advent - Trap Phantasm (Theme of Prometheus/Pandora)
https://www.youtube.com/watch?v=VkeTPE2LqDw
MegaMan ZX Advent - Slam Down (Boss Battle)
https://www.youtube.com/watch?v=OGzc2KPO3zY
MegaMan ZX Advent - Twisted Vine (Theme of Rospark)
https://www.youtube.com/watch?v=dWPtiKo20PY
MegaMan ZX Advent - Be One (Theme of Ashe)
https://www.youtube.com/watch?v=CJu4-P24TG8
MegaMan ZX Advent - Destiny (Theme of Grey)
https://www.youtube.com/watch?v=Cy6f35BX38g
MegaMan ZX Advent - Rush Trash Squash (Theme of Vulturon)
https://www.youtube.com/watch?v=sNv4dFyNBEQ
MegaMan ZX Advent - Drifting Floe (Theme of Chronoforce)
https://www.youtube.com/watch?v=sB8LI9dDLio
MegaMan ZX Advent - The Wind (Theme of Aeolus)
https://www.youtube.com/watch?v=-tDhmYUXPRU
MegaMan ZX Advent - Determined Eyes (Theme of Vent/Aile)
https://www.youtube.com/watch?v=W23t3jgWFCk
So many links, your head will spin.