Had a chance to fondle the VP-9 and PPQ today - both fit my hand well and much better than my Gen 3 G17. With the Glock in a one hand "Bullseye" hold, I can just barely reach far enough to deactivate the trigger safety. While I've always been able to shoot the Glock just fine with two hands, one hand has been a challenge due to the bulk of the grip and the long heavy pull of the trigger. So in a way I'm going back to my roots as a Bullseye competitor and looking for a defensive pistol that I can shoot well single handedly.
In terms of trigger pull the PPQ and VP-9 differ a bit from each other, but as expected both are noticeably smoother and lighter compared to the Glock. While the VP-9 has smoother take up to the wall, there is discernable travel from the wall to the break. To me it feels like a smooth take-up and then a smooth, short roll to the break.
Compared to the VP-9, the PPQ has a longer and not-quite-as-smooth take-up to the wall, but once there the break is amazing: short and clean, much like a SA trigger. A key factor for me is that the PPQ's trigger stages further back in the pull, thus making the trigger easier to reach and control for precision shots. Holding the PPQ in a proper one hand "Bullseye" hold (barrel axis aligned with forearm), I had no problem staging the trigger and then squeezing a clean break - nice!
While I have no plans of joining a Bullseye league with the PPQ, I do plan on burnishing my one-hand shooting skills. I'm going to test fire a PPQ next week and if as I suspect I can shoot it better than my G17, my decision will be made. I'm glad I finally got around to seriously looking into alternatives to my Glock.