I'm a hobby blacksmith who makes the occasional knife, and I make quite a few tomahawks. I use Red Label sanding belts on my bench sander and my band file for a lot of different things -- mostly steel, but some other metals, as well as wood.
All the belts I get from Red Label are good. They're sharp, they cut well, and they last a long time. Prices are are reasonable, and delivery is fast. What more can a customer ask?