Sonic adventure is hard evidence that Sonic most certainly did not have a rough transition to 3d. Even 26 years after this game released it still looks amazing and runs great. The music, and level design in this game is fantastic as always. I also really liked all the stories, my least favourite was probably big the cats and even then it wasnt bad. Here is my Ranking:
1. Sonic
2. E-102
3. Tails
4. Amy
5. Super sonic
6. Knuckles
7. Big the cat
All of the stories are amazing and I'm looking forward to play adventure 2 after experiencing this absolute masterpiece