granted there are advantages and disadvantages with either way but looking at the prices of S-IPS stand alone panels, including led backlit, decent ppi, large resolutions there ain't much to pick from out there, is there?
here is a list...not sure how up to date it is but looks pretty recent...
according to the article, basically in today's market if the iMac 27" was a stand-alone monitor without anything else it should go for about $1500...huh??? now throw in everything else for $200 and you got a pretty good deal every which way
http://www.marco.org/222434049
embedded link in article