Sonic Adventure, I loved that game, and I still love it today. I loved having an over world with different areas to go to, I loved the level design and the sense of speed added, I loved the stories from the different perspectives, and I loved the additions of the Chao. I also really liked all the different characters I could be, but I hated the Big the Cat levels. The Fishing sim stuff was just too radical of a change that it seemed needlessly difficult. I also never had a problem with the Knuckles levels (or the Knuckles and Rouge Levels of SA2), honestly I don't understand the complaints... it's never taken me more than a few mins at most to complete the emerald shard search, and I never had issues with back tracking so I didn't get bored. I just didn't understand why people can hate that so much, and not hate the puzzle searching stuff in games like Mario 64 and Zelda (when they use the same logic in finding them).

For Sonic Adventure 2, I liked it a lot also, not as much as SA1, but it was fun. For some reason, I didn't like Sonic's level design as much, and found the Tails and Robotnik levels kind-of boring. I like how the Chaos were improved (and even more so in SA2Battle), and I liked the vs. in Battle. It was a good game though.

I will say that I liked the music in both games and never once had an issue with the camera. Those were two complaints people had. I don't know, I must say that complaining about the music is more of a choice in taste. Thinking back on it, it's kind of insulting that some reviewers rated down on the games because of it, as their choice in music is probably different than mine, and what they consider their favorite band may be closer to trash to me. (Not that the SA series had my favorite game music) As for the camera, I suppose it may break up if you try to do something you aren't suppose to, I'm not sure, but I know this was a major issue for reviewers.

I know I generally have a bias against most game reviewers because they seem to have tendencies to like things a certain way. (Just like I think movie critics tend to like a particular kind of movie more, and are inclined to give a ratings boost to those types because of it)

Though for the rest of Sonic's games... in Heroes, I liked that they finally brought the Chaotix back after fan cries for ages, but the overall game lacked a lot to me, and in the end, just didn't feel like a sonic game unlike the other two.

For Sonic and the Secret of the Rings... I think it should have been designed giving sonic the full powers at the start. The fact that you have to completely beat the game for it to feel right seems odd, and the game itself felt more like you were holding sonics hands the whole time rather than playing as him.

I haven't played the Sonic the Hedgehog HD, and I won't even talk about Shadow... well... on the plus side the theme song is an m-flo song.. that's about it.

As I see it now, the only way there will be another good 3D sonic game will be if SEGA gets enough control of itself again to rebuild sonic team the way it was and give itself the same budget. I think Sonic can use a revival though, Nintendo fanboys are a little too smug.