Lets see.
Sonic The Hedgehog
Sonic The Hedgehog 2
Sonic The Hedgehog 3
Sonic & Knuckles
Sonic Chaos
Sonic Trible Trouble
Sonic Drift
Sonic Crackers
& Dr. Robotniks Mean Bean Machine
best 8bit games in sonic history, the rest is meh
Sonic Jam
Sonic Adventure
Sonic Adventure 2 / Battle
best 3D games in sonic history, the rest was bullstuff
(my opinion and experience)
but to get back again to Sonic Heroes
I enjoyed the story, yes, it was the only thing that made me want to play that game, the gameplay in the other hand was the worst stuff ever. I was so disappointed that there was no Chao Garden anymore that I actually had to shed a tear.
The only thing that made me want to buy this game was the hope of a newer and better chao garden with more features.