I have Stoked, Shaun White, and Amped 3. I think Amped 3 is a much more fun game. It's classic Tony Hawk style and a blast. Stoked and Shaun White have much better graphics, but I hate the controls and the events are super boring. Stoked is full Skate-like type controls (which I hate).
If you can find Amped 3 in stock at Gamestop, it's priced at $10. People criticize the style/humor of the game. Look past that.