if your going to shoot a lot mark3 hands down no contest. cheap mags easy to find mags and massive aftermarket support. there is even a speed loader out there that actually works well for loading mark3 mags.
its the 10/22 of pistols you can work on every aspect of the gun yourself with nothing but some punches and screwdrivers.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...