This is a great little sander.  Gutsy and does what it's supposed to do.  The belt tracks well with only occasional adjustments  It does have a stream of air that comes out of the motor (for cooling) that tends to hit you in the face and you need to keep clear of that when sanding or after a few minutes your eyes get a lot of very fine dust in them.  I've heard some reviewers complain about heat build-up on the belt, but they might be putting too much pressure on the sander or have cheaper belt.