I'd like to get a sander for some rough and ready operations like shortening tenons, leveling table legs, crude roundovers, etc. Grizzly has a 12" disc sander that I can get delivered for $135 and I saw a Delta at Rockler for $170. I've also heard of there being an attachment for a table saw, but I've never seen one. I suppose a belt sander would be nice too, but I have serious doubts about how much I would really use it. Any opinions, experience or idle conjecture appreciated.