Glock 19, all day, every day. Hi cap (pre-ban) mags, ruggedness, reliability. It's also really easy to work on (if you can't do a trigger job on one on your own for about $20 you've got problems) and parts are plentiful and cheap (they're like Lego sets the way you can build them). That said, I really do like the Ruger SR9C (it seems like an incredible gun for the money) but probably wouldn't buy the fullsize since I live in MA (stupid 10rnd mags...). My first gun was a SW9VE. It was reliable after the first 250 rounds (when it burped, farted and jammed up lie a bastard) but I was new to the sport and couldn't hit the broadside of a barn with the trigger the way it was. No experience with the Para.