I loved ssx tricky. I had an absolute ball.
That being said, I didnt like ssx3 near as much. I only put a few hours into it and it has since been shelved. Its possible that I might play it again because there seems to be alot of depth.
After playing that, I got the original amped. I really like the "realism" of it. It the second one is near identical, with online play, I think Id rather play amped 2, especially since it's cheaper.