About the cheapest "2011" you'll find that seems to be reliable enough for work would be Kimber's new DS Warrior. I haven't shot one, but they're getting great reviews. It's not in a commander size yet though. Next bet on cheapest reliable 2011 would probably be one of Kimber's 2k11s, which do come in commander length slides, but you're looking at around $1700. There are others out there, but they tend to be hit or miss on reliability, even by individual guns, so you take your chances if you're looking for stone-cold reliability out of the box. But, this whole thread is great if you really want to learn the system on the cheap, and like tinkering.