Hello! I am wondering how long do Apple Displays can last for? I am thinking of buying a 20" Apple Display that is 4 Years old for the price of $270. However, I am concerned with the color fades or if the ACD might break within the next year. Also, do YOU think Apple will update the Cinema displays at Macworld (and that I should wait) or even provide an adapter to work with old Macbook Pros and other Macs? Thanks for the help!