Have had my 9mm PPS for little over a month now. So far no problems. Also have a Kahr CW9 so I'm a fan of the single stacks due to the size. The trigger on the Kahr is very smooth, but the PPS trigger is shorter and more glock/XD-like. I think I shoot it more accurately than the Kahr b/c of the shorter trigger, accuracy is pretty good, I'm sure at this point I'm the limiting factor.
I think the biggest hesitation some people have is with the magazine release being on the bottom part of the trigger guard. Some hate it, others say it's perfectly fine once you get used to it..... just personal preference. If you haven't played with one yet I'd suggest trying out the mag release.