I'm testing a Samsung B2430H monitor with my MBA at the moment, and while the screen seems okay if the brightness is below about 98% there is an audible whine which is very distracting and annoying. This monitor has good Amazon reviews, but a few people mention the whine. I've heard good things about Dell Ultrasharp monitors - maybe I should send this back and try one? Like a U2412M? I'm not looking for the top-end displays, just one that will do as a desktop monitor and that doesn't make a noise!