Well after tons of advice and a lot of thought I started bidding on a used 6" Dynabrade sander with a 3/16" orbit. Every auction would reach the 90 to 100 dollar mark which seemed way to much for a used sander, some of which were fairly beat up. Something about what Dave said, his Dynabrade being nice for old tired arms rang a bell with me, so I found a new one with no reserve and bid on it. I won that earlier this week, 87.00 in the last 30 seconds jumped to 118 but will be worth it in the end(these go for 199-250 new depending where you look), as I plan on doing lots of body work and probably will have more projects in the future.