agreed with all said. You will love the random orbit sanders. Yes, sandpaper is more expensive, but I find it lasts longer too. I like the hook and loop kind, as I change the grits much more often, (as you are supposed to) you tend to really work your way up the grit scale when you only have to stop the machine for 10 seconds while you throw on a new grit. And instead of sanding with a finer grit because you are afraid of adding scratches, the random orbit will allow you to use a coarser grit than you would be able to use with the palm sander. And yes, keep the palm sander. I don't use it for inside corners that much, better to sand the stock well before you assemble it, but you do need it for outside corners too, and rounded areas where the disk doesnt work that well. They both have uses, but the palm sander is good with fine grits on less even surfaces.