Reply by robjeffking

The ros is the best for finishing and swirling out machine marks but the sheet sanders work the best on edge sanding
I also find the sheet sanders works best at holding a heavier paper not to mention you can clamp in non-velcro paper
you may have laying around . Go with the ROS first and look for a model with a sealed on/off switch my first ros sander’s switch was unprotected and failed in less than a year.