In my case my MacPro is too old to upgrade to the newest OS so I purchased a used (most recent version) iMac 27" for $1,100.00. The machine is fantastic. I also have last years mini on my HDTV so I can surf and watch all those stations that don't come on ATV. Anyone who says last years models are not worth getting do not live in the real world. Many of us just wait for you to turn over a year old machine for the latest, greatest machine.