I just got the PC version of this on Steam, and I am liking it so far. The performance isn't as good as I had hoped it would be; gets kinda choppy in spots. Sounds like they didn't spend a ton of time optimizing the PC version. Unless you've got an uber PC, I'd suggest either the 360 or PS3 version...it sounds like those run much better.
My PC's not state of the art any more, but it's not total c**p either. Intel Q9550, GTX 260, 6GB RAM, Asus P5K, etc.....
—Bisnut