I have a Ryobi 3x21 which works fine but doesn't get used. It is shaped like a Bosch that has the motor between the drums the belt rotates over. My Bosch random orbit sander has the turbo mode mentioned by others. In that mode it removes wood about as fast as my belt sander and it can be near instantly flipped to random orbit mode to help remove the scratches left by the more aggressive mode. In random orbit mode it has a 5mm orbit so it still removes wood significantly faster than more typical random orbit sanders. It's only drawback is it is challenging and tiring to use one handed. But it is still the sander I use for anything very serious. I like my little Wen spindle sander which also has a belt sander capability but for hand held work, I think the more agressive random orbit sanders are the way to go.