Joe, I also have both the G17 and a CZ75B and can tell you about MY experiences, but of course, YMMV. I bought both guns used, my G17 from a local gunshop and my CZ from the local range. The G17 is a 2nd gen frame, and appeared to be new/like new condition. The only thing that told me it wasn't new was a peice of grit tape on the front strap. My CZ was the range's rental gun, and the one time I did rent it, it jammed like crazy. I attributed it to the dirtiness of range guns, and bought it later anyways when it was for sale. I only paid $205 for it, so I didn't expect a whole lot. That being said, it was pretty beat up looking on the outside, but the bore seemed to be in good condition. I have no idea how worn the springs may be. It came with hogue finger groove grips, which I am neutral about. Ok, so on to the shooting.
At first, I HATED glocks. Hated how the felt, how they looked, etc. But, I figured hey, with as many people out there that swear by them, they can't be all bad. So, since it was a pretty decent deal, I decided to try it out. At first, I hated the trigger, kind of heavy and "sproingy" (if you've ever shot a glock you'll know what I mean). But, it grouped great, and was dead reliable. I have gone about 500 rds without a cleaning, and it still function flawlessly. You'll get used to the trigger, like you will the grip angle, and after that, I bet you'll kind of like it. For me, it is the most accurate gun I own (in relation to SA mil-spec, CZ75B, GP-100, S&W M10 2"). I like the standard plastic sights, and feel they are easy to pick up and quick also. I don't think I would want a lighter trigger, especially on something that would be used for defense, but the G34's trigger is pretty sweet.
Ok, for the CZ, like I said, mine was pretty beat up. Reliability has been so-so. Sometimes it'll fail to feed, brass usually ejects straight back onto my forehead, and so forth. It probably needs new mags and maybe an ejector tuning
But, when it does work, which is most of the time, it works great. Trigger pull on mine is awesome, probably because it was so broken in as a rental...way better than the Glocks. Sights are a little lacking, a little orange nail polish on the front sight will probably help that. It is also a damn accurate gun, much like my G17, it's just that the sights are a little harder to pick up, for me. Grip angle is probably more standard than the Glock, and it is more ergonomical/less blocky. I bet with a really good cleaning and some new springs/mags and possibly a tune-up it'll run great. Too bad I don't know of any decent smiths around here besides an in-house one at a local shop.
Well, hope this helped.
