I've used Norton, 3M, Klingspor, and Hermes, as well as some cheap import stuff. The cheap stuff has some value on woods that plug up belts badly. For the others, they all have decent offerings - ceramic for coarse metal work - structured abrasives (3M and Norton) for fine metal work and, of course the J-flex for fine handle work. I guess I should add zirconias for coarse wood work as well.
My preference for all of the above? Norton! Hoggers for Ceramic - Zirconias, Norax for structured and the incredible NOrton Cora line for J-flex. (KF376)
My 2 cents:thumbup:
Rob!