I'm planning to sell my 1,1 Mac Pro and upgrade to an iMac. I don't need massive power (only have a Mac Pro for its upgradeability and capability to support 4 displays). I plan to run my 30" Dell monitor + the iMac most of the time, but I'll also run a HD projector approximately 3 times a week. Here's my dilema: do I spent the extra money for the 27" to get an extra TB connection so I don't have to hot-swap the 30" for the projector 3 times a week.. would that continual wear and tear be problematic? The dual-link DVI switches I've seen are expensive, $350 and up (and seem to share 1 monitor with 2 systems, not 2 screens with 1 system), so might as well get the 27" iMac. There won't be a time when I need both the 30" and the projector simultaneously, so I'm thinking to go cheaper but don't know if that's a long-term solution. Input appreciated.