never had one issue with my pro carry. My dad's ultra carry has never had one issue, however his $2400 Nighthawk custom has been in the shop 4 times, all for major problems.
my mom carries a ultra carry also with no problems ever, and they go to the range weekly....
point is all guns can have issues, no matter if you spend $300 or $2000+
hell my dad wont carry his nighthawk now since he doesn't trust it, its just a paper weight now..