I have one and like it a lot. I carry mine as my backup or go to gun. Shoots great and i have shoot about 1500rds. Mine is the first edition and haven't had any problems.
I WANT to like the PPS. Really really really want to like it.
If it had an "AS" trigger like the P99 I probably would like it. That, and a de-cocker like the P99 has. I'm not a fan of needing to take the back strap off to decock it.
The one I handled...the trigger seemed VERY difficult to pull. And, for me, the grip was actually a little too thin and too blocky. Didn't feel right.
I definitely agree with Indy Guy. The triggers are a mess on PPS's, and the gun is just shaped funny. Look into the full size Kahr 9mm; it's about the same size, a little bit cheaper, and has a much better, smoother double action only trigger.
I have a Kahr CW9 I like alot. I actually traded in a Walther PPKS to get the Kahr. I fits in the front pocket of my Wranglers, only the grip sticks out. covered by my shirt not tucked in. Used a slip on rubber grip and was totally satisified. I agree witht he trigger comment.