i had the unfortunate experience of owning a dewalt 433 piece o junk belt sander , a great idea gone very wrong .  it seems there are fewer and fewer manufacturers out there making sanders  so choices are limited.  fortunately makita has perfected this unit and it is a delight to use .  very stable , not too loud , excellent dust pick up , super easy belt changes and perfect tracking , not to mention the long cord and the ability to run 4x24 belts .  this sander actually makes me want to sand things .