PPU, UMC, Blazer Al, Blazer Brass, Aguila, Fiocchi, MagTech, Federal, Pierce, Wolf, Armscor, Monarch Brass, and several brands of commercial reloads. I'm not a fan of WWB or S&B. I have had inconsistent loads (no squibs or kabooms, but some very light loads and a few heavier than average) from Legendary Ammo commercial reloads, so I don't buy from them any more. Other commercial reloads I've tried have been good to go.
I tend to buy by price, but I am staying away from steel cased pistol rounds now. They make the action of a couple of my pistols feel sluggish. They function okay, but I think the increased friction of the steel cases compared to brass slows the slide down a bit. Could be my imagination, but I don't think so.