Ok, here goes my $.02. While I don't have the 9mm, I do have the Px4 Storm in a .40. I love the gun. It is my daily carry. Fits very well in my big hands. The mag release is in the correct position for my thumb and I find the fit and finish are excellent. Very accurate, easy to shoot. I have had absolutely no problems with this weapon. I even took it to a tactical class at USShooting Academy. For the weekend, we shot approximately 800 rounds and not one failure. Was even able to hit our target on the first day from 65 yards out. Man that made me feel good.
Bought this one at Bass Pro. Price was a little high but they were the only ones that had it. Shortly after purchasing, I did find it at Academy for about $60 less than I paid. That was about a two week span and I "needed" that weapon. At least that was how I justified it.
Hope this helps. I don't think you can go wrong. But, hey, it has to fit you and your budget.