So I was hoping for a new mac mini or at least a new iMac to drive the used prices down on the current 24". But since it didn't happen I have to pull the trigger on something used soon. Whatever I get will get 4gb ram, and would like to not spend more then about $1000 for initial purchase. I'll be running a seperate monitor on it as well as the one it comes with. I'm not opposed to a laptop if there's something that's a real bargain and will fit my needs but it would be used primarly as a desktop regardless. So what should I be looking for?