[dayman]

If it's a toss up I'd try to handle them both again.
What I'd do it point both at a target instinctively, and then look down the sights and see which lines up closer to where you wanted it.
For me the PPQ points very naturally. It does have a bit more muzzle flip than some other guns, but I find - again, just for me - my follow ups are not slowed significantly due to the fact that after it flips up, it comes back down and lines it's self up nicely. My initial shot is generally faster too, for the same reason.

I narrowed things down to the same 2 guns when I was shopping, and decided that I liked them both. I wound up getting the PPQ, but I do plan on getting the G19 at some point. There is no bad choice there.

As far as the reliability concerns with the PPQ, IMHO they're unfounded. The PPQ is basically a P99 variant, and the P99's been pretty thoroughly tested and vetted.