I picked up a Ridgid 6" ROS a couple/three years ago to use sanding down floors in a house my wife and I we rehabbing.
I already had a DeWalt 5" single speed.

The DeWalt has seen better days and the pad needs replaced now. I can't see sticking that much money into an old single speed sander that doesn't do all that great - and never really did.

Since I have the 6" Ridgid - which is a really great tool - do I need a 5" ROS too?