I found that I needed 3 Festool sanders to accomplish the type of work that I do. I am going to extract material from another thread here that I responded to earlier today. It describes the sanders that I use.
The Rotex RO 150 random orbital hooked up to a vacuum eliminates dust, in aggressive mode replaces a belt sander, and in fine mode produces a superb finish. Perhaps it is not as good a finish as can be achieved with a scraper, but I can't tell the difference. As for getting into corners, I also have a Fetool LS 130 Linear sander that uses rectangular pds and a Festool Deltex DX 93 detail sander that uses small triangular pads. Of course these sanders hook up to the vacuum as well.