I went through 4 of the previous iMacs, all with different problems, and finally decided to just wait for the refresh. I just got my new i7 replacement in the mail today, and its perfect!!!! I am so stoked right now. The screen looks gorgeous, no yellow to my eyes anyway, and its sooo quiet. There is no dog whistle noise when adjusting the brightness, and normal operational noise is non existent. Not to mention, this thing is so fast. My recommendation for anyone that was scared off by the quality of the previous iMac is to buy this thing, its seriously sweet.