Hi After 5 iMac 27" i7 recplacement with the same issue (Yellow Tinge) I've decided tro proceed to a total refund. So now i've about 2000 $ to buy an Apple Computer with comparable performance. I do not think there is a good solution: I Can buy a 15.4" i5 with and 24" Apple Cinema display but I would have lower performance, smaller screen, lower resolution for about 3000 $ (1000 $ more of iMac!!) To have comparable iMac i7 performance should I buy a Mac Pro but how much cost a 27" monitor with the same resolution of the iMac 27" with LED backlit? can anyone help me? thanks!