Originally Posted by Sooie
Updated choice list;
xd40 service model or compact (still dnt know)
Now. Caliber. Leaning toward a 9mm in glock or .40 in xd.
It's really hard to go wrong with any of the guns you've listed, or the calibers for that matter. These are simple, durable, and reliable guns. They're also easy to resell for 80-85% of the new price, provided you take good care of them.
9mm and 40sw are both proven defense rounds, affordable to practice with, and just all around good utility rounds (which would also describe the guns in question).
Now it's just a matter of figuring out which one you like best. Do that, and you won't be let down. Really, the same could be said about almost any poly pistol in the $400-700 range (Sig, CZ, FHP, M&P, etc). These are simple, versatile, and utilitarian by design, which can be a real asset for first gun.