What has been your most trouble-free auto loader handgun that cost less than $600 new? It can be any brand including Glock but not limited to them. I'll go first with mine being a CZ 75 Compact. I lost count after three years of almost daily shooting with not one failure to function of any kind;ever. Compared to other compact handguns it's on the heavy side but if I could not have but one pistol that would be it.