I can't comment on the customer service of any of these manufacturers, but each one has seen anywhere from 2k-6k rounds with no failures of any kind. All of these weapons are utterly reliable if cared for properly. I believe the same can be said for anything coming from Springfield Armory, S&W, FNH, Beretta, and of course Glock.
I think the real question is what are you looking for in a handgun? I might better be able to come up with a suitable suggestion with some pointers.