PS controller is definately the best. The analogs are perfect - the 360 controller screws me up when aiming in FPS titles. This, however as stated above, is preference.
The d-pad alone is the biggest reason that the PS controller is better than the 360. Fighting games and games in general where specific 1-direction movements are important are far easier to coordinate with the PS d-pad.
And I don't really understand the 'the controller is too small' argument. I have huge hands..like probably just as big as, if not bigger than, anyones in here. Literally, I have bigger hands than anyone I know..and I prefer the PS controller over the 360 controller.
Which is odd if I think about it. Last gen, I preferred the larger XBOX controllers over the smaller ones because they fit in my hands a lot better. Maybe the design of the PS controller is such that hand size doesn't matter? I don't know..but I've never held a controller that felt more comfortable in my hands than a PS controller.
Also..the triggers - whats wrong with them? I don't have a problem with them at all..maybe I'm crazy.