I have a 24" iMac RevA. Im looking to get a second monitor. I'm not sold on and one brand, but I do want it to be at least 24" and have the same resolution as my 24" imac. My question is, what do I look for to get the same look as my imac. I dont want to have two different colors on each screen. I want both to be equal. Does it matter which one I get and just get a monitor calibrator?