Would that explain why the ACD does not have any screen issues like the yellowing, backlight leakage, screen smokey in places?
I sent my imac27 back because of these issues and waiting to see if the issue has either been resolved on the refresh or get (after refresh) a mac mini with an ACD (also after refresh).
Probably will work out the same price or even dearer compared to an imac27 (with i5 cpu) but just cant be doing with these issues.