I need your advice on whether I should buy a used 23" ACD & iSight for $400. The ACD has four "stuck" or "hot" pixels (they aren't black, they are white & red). I want to see if these be fixed with the various techniques and programs out there. It also has a pretty good scratch on the back and then other minor wear and tear. The iSight seems to be in perfect condition. I currently have a octo MacPro with a 30" ACD. I've been wanting to get a second display to play a movie, have itunes and have a couple other programs stay put while I switch between spaces. I stumbled across this deal and really torn on if I should pull the trigger. I could get a new 1TB hard drive and another 4GB of ram for $400. Any opinions would be appreciated, thanks!