+1 for CZ.
Points can be made for and against both models. It boils down to your use and hands.
Use: range, no combat, no crazy mud, ... Any will do.
Hands: small, large, feeling (trigger, grip size, "squareness" of the Glock, trigger finger length, ...). This we cannot help you with, you have to handle both and see.
My 2 cents when I did that same exercise:
- Glock: consistent, if heavy trigger. A bit weird at first, as I was used to long range rifles with air triggers. Grip angle was not natural for me, so I tented to shoot high.
- CZ: I got a CZ-09. DA-SA took a bit of getting used to. But I had a 92FS before, so this was known territory. MUCH better trigger. Double strike possible, this helped me a couple times in timed events. Overall I prefer the CZ.
For me, Glock is a Civic. It is decent, reliable, ok. CZ is sportier, more "###y", and as reliable as the Glock (for my use anyway).
And until you fire a 1000 rounds, do not assume the pistol is the problem if you are not accurate (ask me how I know...). It takes a while to get used to it and have a consistent trigger pull.
Used models are great, remember you have to feed the pistol!
YMMV obviously.