Although maybe not popular(not mentioned, that I remember) on this site, I have been using Winchester High Velocity SuperX $1.50/box/50. Out of every 500 rounds(been through 2000 with a new 22/45 over 2 months), I'd say I have gotten an average of 1 or 2 failed-to-fire per 500 . From what I have seen on other sites, the product has moderate accuracy (not the worst by far for the money). Starting out I had bad luck with cheap Remington and Federal.
I'll echo what I hear here , that each gun likes different brands. I think I've been doing ok and intend to stay with what is working for me until I can outperform my machine.
I'm not competitive yet, so I have not tried match grade ammo.