The shape is great, but the controller is flawed.
The awful trigger layout is it`s first major flaw. F Zero X, for example, plays awfully. Right air-brake is right bumper, but left air-brake is either trigger and it feels super clunky.
The analog stick`s sensitivity is awful as well. Games requiring precision, like Goldeneye, are unplayable due to the way the cursor instantly whips to the edge of the screen when trying to aim.
It`s quite comfortable though, and more casual games feel pretty good. I played through all of Rayman 2 with it and had a decent time.