I buy this sander to replace a older model with a non-centered motor . this tool be well balanced and have the motor over the belt make it much easier to use and eliminate my tendancy to tip the machine and cut into the wood . it be a heavy tool and the weight work in it be favor . the belt be easily remove and install with the single lock lever . the alignment be easy to adjust and the tool be relatively quiet . I have use it with the dust bag as well as with a vacuum hose . dust removal be pretty good with the bag but of course the hose be 100 % . the design make it easy to sand right up to a vertical wall and that have come in handy . I think this be a excellent tool for finish large surface like tabletop and get top notch result .