For bike specific tools, Pedro's and Park seem to have a good reputation.
For common hand tools(screwdriver's, allen wrenches, pliers, etc.) you
have the cream of the crop - Snap-on, Mac, Matco. For the home mech;
Sears(Craftsman), Home Depot(Husky), Lowe's(Kobalt). So one thing to
consider is price. Another is warranty. All of these companies offer a lifetime
replacement. But their procedures differ. Pedro's, you have to deal with a
local bike shop. Snap-on, you have to catch a truck on it's route.