Hello! I've been wanting to have a second screen for a while. I have a 27' 2010 iMac, but I'm planning to buy a 27' retina iMac (when ever the new ones come). I came across a fairly cheap, used, Apple LED Cinema Display 24'. Are those any good in todays standards? They look good next to an iMac so that is a bonus, but how is the screen quality? Would it be weird to have a FullHD screen next to a retina iMac. I think it would be useful to also have a low resolution screen as i work with graphics and web design? Or maybe I'm thinking wrong.. Any help would be appreciated.