Thanks for your reply. Is there any problem with using one of these on plank flooring. Will the results be the same? Do you think I could sand down a living room and dining room (maybe 600 sq ft) in one day? That is my goal, and I know I can do it with a drum. I just don't want any chatter marks or swirls from an edger if possible. I have already done the kitchen, but there were several layers of flooring to remove first, including tar paper, so I had to sand agressively. This was not condusive to a perfect finish. Any help?