Mine still is. It's going on 4 years and 7 months old now. Actually running "better than new" as I 1.) now have 6GB of RAM vs. the 2 that it shipped with, 2.) have a 240GB SSD in place of the stock 320GB HDD, and 3.) created a home-made Fusion Drive with my internal SSD and a 2TB external FW800 HDD. I so much want to upgrade to new technology, but can't quite justify it yet. For what I use it for (Aperture, iMovie, Garageband, documents, web surfing, etc.) I find no fault with it. I also have a 2012 MBA that is shared with my wife and son, and the user experience on my iMac is just as good. Besides, I'm still trying to decide whether I want a new iMac, or go the Mini route with maxed out processor, self-installed RAM and self-installed FusionDrive. They benchmark out pretty good, and my graphics needs are not very high, although I would like to "graduate" from iMovie to FCPX, which I can't do on my iMac.