I redid several rooms and couldn't stand the thought of drywall dust everywhere. A good drywall pro doesn't need much sanding. But this is a DIY site
so I figure I can admit I wanted a vacuum that could take the dust. Also, I had a good bit of ceiling work to do. I don't have the arms I used to. So I bought the sander and vacuum. Works GREAT. I didn't rent because the project was so spread out. The power sanding gave me the time to re-do bad taping and get a nice result. If you don't suck up that dust it goes EVERYWHERE. And it's a nasty dust.