This summer I'm going to be purchasing my new technological setup. A computer (MacBook Air), something else to use as an external monitor for a higher resolution, an Xbox 360 and an HDTV. I'm having a hard time deciding what is best (for usability, and my budget). At first I thought I'd use an HDTV as an external monitor, but I've now realized that I would have to turn it on/off constantly throughout the day (especially because I'd buy a plasma TV for gaming and it'd get pretty warm). This would be too much of a hassle for me and I know I would barely use it. I need something quick to use at random times (like an iMac. As soon as you want to use it you click a button and BOOM you're on) Am I correct when I say that an Apple Cinema Display has this automatic on/off function? If so, that would be handy, but I'm not sure I could swallow the price. I know my list of things to buy looks like I have a ton of money but I really don't, and I'm trying to be as money-cautious as possible. Are there other external monitors that have that function? And if so, what is it that allows it to work? Is it the USB plug? I'm just kinda curious there. Any other advice for me? Ideas? Thanks!