Hi, my 2006 Mac Pro died earlier this year. I'm on a Macbook Air at the moment. But I'm looking for a replacement mac that will last as long as my 1,1 Mac Pro did. My big concern is having the display tied into the hardware for a longer lasting machine (one part goes bad you lose both). But regardless here is what I'm looking at: $2100 - 2012 used iMac 3.4 ghz processor 3 tb fusion 32 gb of RAM and 2gb video card $2500 - 2013 refurbished iMac 3.5 i7 3 tb fusion drive 8 gb ram 4 gb video card $3450 - 2014 new RiMac 4.0 i7 3 tb fusion drive 8 gb ram 4 gb video card As you can see the price jumps higher and higher as I get to the newer iMac's. My goal is to get an Retina display iMac in the next few years. If I got the 2012 or 2013 I would replace it with an 2nd generation RiMac when prices drop and any kinks worked out. Any feedback is greatly appreciated. It appears that the speed difference is negligible between (15% rise between each) so putting the 2014 mac 30% faster than the 2012 (guessing). But I'm not really in it for the speed. I'm looking at the older higher end models incase I do end up keeping it I want it to last 5 - 6 years (why I buy Apple in the first place). BTW, My usage will be programming, watching videos, light gaming (WoW, StarCraft, Diablo), photoshop, illustrator, and lightroom (as well as regular user stuff like web surfing +++). Is there any differences specification wise on the 2012 iMac versus the 2013/2014? OR any major issues with the 2012 that I need to be aware of?