I've recently owned both. The P-07 was 100% reliable from the get-go, as have been all my Glocks. The Glock 19 may be, statistically, the most reliable handgun on the planet; if I had limited funds and wanted to play the reliability odds, I'd get a G 19.
My four Glocks, and all the other Glocks I've shot, had somewhat better triggers than the P-07. The latter's DA pull was awful, so I kept it cocked and locked. However, even with the P-07 cocked and locked, the G 19's pull is shorter and lighter. That said, my CZ 75B SA triggers are superior to the standard Glock 19's. (The Glock 34 trigger, however, which can be installed in a 19, is one of the best I've ever pulled.)
By the way, if you install the cocked and locked option on the P-07, be careful not to dislodge the tiny metal piece behind the safety lever, because it controls the c&l mode. Mine slipped out and made the gun virtually inoperable until I managed to find the damned thing on the floor, where it hid nicely among the dust balls. That little tab is the cheapest piece of of junk I've ever seen on a quality gun. In any case, the safety lever is too damned thin for certain, quick deactivation under stress. I bought the P-07 because the Glock's lack of a thumb safety still gives me the creeps, but I wish the P-07's were wider and quicker.
The P-07 grip is much more hand-friendly than the Glock's.
For me, Glock sights are the clearest around, but the P-07 were superior to those on my other CZ's.
I shot the P-07 quite a bit more accurately than the G 19. The CZ had the makings of a really fine shooter.
Good holsters are much easier to find for the Glock.
I ultimately sold the P-07 and kept the Glock, primarily because the 19 is 4 or 5 ounces lighter, which is the best reason to have a polymer gun in the first place. CZ needs to get it down into the 22 ounce range.
But I usually carry a CZ Rami because it weighs the same as a 19 (though with 10 rounds to the Glock's 15) and has a safety (although a crappy flat one, like the P-07's). My Rami has been converted to SAO by CZ Custom, and the Glock trigger ain't in the same ballpark. (If you don't want a super light pull on a carry gun, stay away from that conversion). The 19's sights are way better than the Rami's, so I may someday swap those out a Big Dot of some sort. For me, the Rami is a carry gun ONLY with the addition of a pinky extension; with the standard ten-round mag, it's too short for me to grip quickly and well. (The sole extension I know of, without carrying the 14-round mag, is one from Pearce for a Springfield XD. It requires a little rubber removal from the the Pearce, which even a mechanical moron like me could do.)
All of that said, I may still wind up carrying the Glock 19 a lot if, with practice, I learn to shoot it as well as the CZs.