Right now I have an iMac but i'm considering to replace it with a MacBook Air. But I won't have to lose the feeling of an iMac and my thought was to buy a good display of the same size (27 "or larger) but i'm a little unsure what to look for. I've tried to buy a Philips 27" with the same resolution as my iMac but when I connected my girlfriend's MacBook Air to the DVI cable the picture was not as good as on my iMac. It was not nearly as sharp on my iMac and have doubts about it maybe due to the reflective screen on my iMac? Can anyone tell me what I should go for if I need a display that is not inferior to my iMac but do not cost the same as a Cinema Display?