I have a t2i and the cx330 (a cheaper version of the pj540). Really the benefit of the cx330 is the size and the fact that you can pretty much point and shoot with it, rather then having a steadycam or tripod for the dslr.
I mostly use it for fisheye stuff and lazy filming, if you want to get serious I'd go with the t3 though. The cx330 is also kinda cheaply built, not sure how it compares to the newer one though.
a passionate skier looking for new and lucrative ways to acquire gnar points