If anyone knows what the Razer Onza is (potentially the first quality 3rd party 360 controller, unfortunately, wired) I finally got mine in the mail today and just played with a tiny bit. It's pretty alright. It's super comfortable, the face buttons are super great, and the added shoulder button is cool. But the analog sticks, while better, are awkward to click in. The d-pad surprisingly sucks more than the original 360 one. The triggers take some getting used to; they are further back and have more range, but they're less sensitive, so you barely need to touch them for them to press down all the way.
I'll buy one again if it is wireless
oh, and the buttons light up and I don't like that. I don't get the purpose. I've been using that new grey sterile 360 pad, and now I'm holding a christmas tree.
a few more random things:
analog sticks are raised slightly higher than the 360 ones and have more range.
start and select buttons are on the bottom of the controller, which is weird considering how much back is used in games. You can reassign it to the second bumper for Bad Company 2, but I still don't get the point. They're even sunk in and harder to press than the existing 360 ones, and they kept the guide button in the middle.