CCI
I'm really surprised not to see more love for CCI (Blazer/Speer). I've only got a 9mm and .22, so I can't say much first hand about the other calibers. But at least for my use they're cheap, CLEAN, and reliable.
I haven't found cheaper 9mm plinking ammo and I don't think anyone would argue with Speer Gold Dots for social work. Those aren't too awful expensive either.
For the .22 auto pistol, I use the same ammo for everything: Mini-Mag HP. We've only put about 1,000 rds through the gun, but not a single failure of any kind. And again, the stuff is so clean it takes about 3 minutes to clean the gun when I get home.
I've used Remington of all grades and find them all to be very dirty. UMC is obviously the worst, but even the mid-grade stuff is mediocre at best. And I can't make it through a 50 box of .22 without at least one FTF, even with a second strike.
I generally like the Federal stuff, and that's my fall back when I can't get what I really want. But it tends to be pricey around here and online. I find the plinkers to be really accurate out of my guns, though.
Just my $.02.