I have one but not as pleased with as I thought I would be. The platform for the disk sander WILL NOT get true and level. The adjustment knobs are not strong enough to hold the platform in place once I have leveled it in both planes. I stopped using it to true up blanks and am now using a bit of sandpaper glues to a dowel and mounted in a chuck on my lathe.
That said, the belt portion works alright but I have trouble raising and lowering the table. Just use it now for cleaning up the bottoms of items I've turned.
I would not buy this one again.