I dunno about brand names, I usually go looking for the highest mAh I can find.
I don't know about other cell sizes, but AA, which has been the overwhelmingly popular size I've needed will be sold up to 2500, IIRC. The Kodak set with charger at Wal-Mart are 2200's, and they seem to hold a charge pretty long, and work DYNAMITE in my digital cam (about 70-80-ish high res pix), whereas the 1600's I first bought with my old charger would last less than 30 pix before I had to swap 'em out.
Someone in a thread similar to this one posted something about Thomas Industries, IIRC, mebbe Google it to see. They sell several different types, Sony, Energizer, Kodak, etc.