Yeah, the 1911/1991, whatever you wanna call it is indeed awesome. And yes, the vintage quality does make it a bit rough, but it still makes for an excellent throwaway, without coming across as "too big" like an ak-97, or "too small" like a hold out pistol. It all depends on what situation you're going into, but I'm always a fan of the saying how a m1911 has just the right amount of rounds for the problem. "If it takes more than 7 shots, its something you can't handle on your own."
Numerically, alot of the guns are pretty "bad"; the vintage quality really hurts (no electronic upgrades, all other mods cost 2x. You can see it in the demo pdf on DTRPG).
Many come with imaging scopes, often with vision enhancements to the scopes, so cybereyes become a bit redundant. These things are great for magicians/adepts who can't really allow themselves to get the upgrade; magicians in particular with the need for non-electronic vision for spells to work (thus making glasses/contacts/goggles a hassle).
Some are pretty awesome, the M4A1 has nice damage while still classed as an SMG, and being relatively cheap for such an upgrade. That one machine pistol is also pretty cool with -1 AP. The xfactor 2 is pretty cool for its increased ammo supply/shotgun, but a bit pricy. That one assault cannon at the very end with the built in response 6 commlink is pretty cool.