I got a 6 in and it had a ton of power, and it grinds, but it is fairly dangerous when a belt explodes
got 2 of the HF type 4 in belt and they are underpowered crap but you wont hurt your self with them
and they all have their use just to pick the right one
sometimes for a little smoothing job the little ones are just the ticket and belts are cheep
other times you need to straighten something out and remove metal the big one is just the ticket, but dont get any body parts in exploding belts