This is my pick for the best RO sander. It runs smoother than the others . It is not the fastest sander in the world but you can run it much longer without having a numb hand. The dust collection is great. The little  canister is easy to dump and you're back at it in no time. Variable speed  is a must for fine work. You don't always want full power. like when you  just want to ease an edge on a nice piece of prize furniture. You can dial  it down real low if you want to. This coupled to the pad control feature  means no ruined work, ever. I use this sander far more than my Dewalt,  Bosch and Makita RO sanders