I like powerpro. Yeah, yeah, I know. I bought a spool (the big bulk spool, 1500 yards, i think) from tim, and have had not one single problem with it. I have had a couple "mysterious breakoffs" in the past, but I would bet that was operator error in my case, and i'd bet the same for most other cases.
A bunch of guys i fish with like the blue diamond braid. It's prettier than my green powerpro, for sure, but I don't think it's any better.
Besides, at some point, you're going to WANT your braid to be able to break. I'd rather break line than the rod, or screw up the reel!