2012 iMac, Its not for everyone
I have been waiting a few months to see what the new iMacs would be before buying a machine. Initially, I was impressed by the new 21.5 model; but, the limit of 16GB, slow hard drive, and lack of upgradability post-purchase is a deal breaker. I had planned on buying the 21.5" iMac for my business, and I don't plan on buying a new computer every couple of years. At least kits are available to upgrade the 2011 model; I doubt that will happen for the 2012 models. I accepted that my PPC G5 had no upgradable CPU, and I can't easily upgrade my 27" 2011 iMac. Its much more difficult to accept that the RAM cannot be upgraded in the 2012 21.5" iMac. Even the RAM in my 1985 Mac was upgraded with the turn of a torx wrench. Refurbs are in my future. I'm still an Apple fan of 27 years, but losing control over upgrading my machine sucks.