Re: Glock 34 & Glock 17
G19 is just about the perfect all around pistol as far as I'm concerned.
-first, it's a glock, which means it is reliable, and very easy to operate. Very few "nuances" and special instructions. Mag in, rack it, stick in holster. To shoot, pull it out of holseter, point at target, pull trigger. Repeat as necessary. When finished, put back in holster
-second, it is sized perfectly for all around use. It is small enough to reasonably conceal, but large enough it's not a "little" gun.
-Third, it has excellent capacity. 15+1 in the form factor of the G19 is fabulous
-Fourth, 9mm is great for many reasons (coming from a 45/10mm guy, by the way). The modern 9mm ammo has made it very, very competitive in terms of terminal ballistic performance. It doesn't recoil a lot, has a small form factor so for a given pistol size, you can always hold more 9mm than 40, 357, or 45.
The G19 is tough combo to beat for "all around" pistol purposes. For those that specifically want to target practice, there are better options. For those that want to deeply conceal a pistol, there are better options. For those that want protection from BIG stuff, there are better options. However, for a one-size-fits-all pistol, look no further.