Offhand, I know I've got Pfeil, Dastra, Millers Falls, PS&W/Pexto, and Addis . . . of the better modern stuff, Pfeil and Two Cherries are the easiest to source. Dastra can be more difficult to find (but I like the handles). Older stuff: Addis seems to have a collector following, but Millers Falls and PS&W (Peck Stowe and Wilcox I think, later "Pexto") are both good. Buck Brothers varied over time--I have some later Buck Brothers chisels I re-ground into screwdrivers. My trigger-inletting chisel is an 1/8" Wade and Butcher mortise chisel (of the type sometimes called a "pigsticker").
Whatever you get, start with a basic set (maybe 1/8", 1/4", 3/8", 1/2", 1" chisels and 1/4" and 3/8" gouges), then fill in as you need them. And definitely learn to sharpen. You can do more with a basic set of tools well-sharpened than you could with "one of everything" that are not sharp.