What does buying an Apple Cinema Display give me that I couldn't get from a less expensive LCD? I am thinking of turfing my iMac 24 (er, selling it), and getting a 23" ACD to hook up with my MBP 15 instead. No need for two computers, really. And the MBP can do everything that my iMac can. Plus, the wife can hook up her laptop to the ACD if she needs to. Any thoughts on the relative advantages/disadvantages of the ACD? Thanks.