360 controller is the most comfortable I've been playing games from this gen. Haven't tried a Wii, but I do have a PS3 and the six-axis is too light. For games with the tilt, it never made me feel more immersed, it just made me feel silly since there's no weight or indication your movement is doing anything.
Last gen, I like the dual shock, but the analog stick positions feel awkward after you pick it up after a hiatus, and it was too sensitive. I also liked the original XBox controller, it was all snug in my hands, everything in just the right place aside from the black/white buttons. I didn't play much GC but from what I did, the controller was kind of... blah.