I have not shot the PPQ (god it's ugly compared to the P99AS) but I can tell you my M9-A1 has a crisp 5lb trigger and an almost imperceptible reset. It can be frankly difficult to hit a dinner plate sized target at 25 yards since I tend to jerk the barrel slightly when pulling the trigger - Takes a lot of practice.
Still, the best ergos and least recoil & muzzle flip of any 9mm pistol I've ever fired.
If it's light trigger you're after, my buddy's CZ75 is incredible.