@CF1782 The box of 9 mm is 50 rounds, shoot the whole box tomorrow!
There are many quality pistols available out there. The key is to try a few and find one you like. Everyone has their suggestion and they are not wrong. You will not be making a mistake by going with something from a quality manufacturer: S&W, Glock, Beretta, H&K, Sig Sauer, Walther, Springfield Armory, CZ. I am sure I am missing some.
If this is going to be used for personal defense, .22 is generally not recommended as it doesn't have adequate stopping power. If you just want it for plinking and target practice then .22 is fine.
Here is the rental list from GFH. My recommendation is go for a larger rather than smaller pistol, the reason being heavier weight means less felt recoil and longer slide means longer site radius = easier to aim. if it were me trying them out, these are the 9 mm at GFH that I would possibly choose from:
29 Springfield Armory XD pistol 9mm
38 H&K VP9 pistol 9mm
45 Sig Sauer P229 pistol 9mm
59 Walther PPQ pistol 9mm
67 CZ 75 B SA pistol 9mm
97 S&W M&P 9 pistol 9mm
246 Springfield Armory 1911-A1 Range Officer pistol 9mm
326 Glock 34 pistol 9mm
327 Glock 19 pistol 9mm
331 Sig Sauer P320 pistol 9mm
349 Sig Sauer P226 Elite pistol 9mm
374 Beretta 92FS pistol 9mm
375 Glock 17 pistol 9mm
402 Beretta 92FS pistol 9mm
408 Glock 48 pistol 9mm
418 Beretta M9 pistol 9mm
I am gathering up some great options to try out though this might be several range trips before I really make a dent on this list of options. Glock 19 got 2 votes so it appears to be a front runner. So if I can tomorrow maybe I'll go with a box of 9mm and give if a chance. If I hate it I will have to figure out something to do with the rest of the box.
That and the mark iv because that gun looks like a lot of fun.