Whiteside, Eagle America (made by Whiteside), and Infinity are all top shelf. The MLCS Katana line, Bosch, Price Cutter, Freud, CMT, Amana, and Lee Valley also have excellent lines if you choose their best (not sure about their homecenter lines that may differ from their industrial stuff…). For budget bits I like MLCS, Woodline, Stone Mountain, and Grizzly. I'd avoid Ryobi, Skil, HF, Vermont American, most Sears, and other off name stuff…..a bit spinning in excess of 20K can be dangerous, so it's not a good time to cheap out on the lowest grade available.