I just bought a Mac Pro with 2tb drive, 24gb ram, ati 5770 video card, 2.8 quad core cpu, Magic Trackpad and apple Bluetooth keyboard for about $650. I was just wondering how powerful a machine it is and how many years I can expect to get out of it. I was going to get the bad model of the iMac (2015) but went with this machine instead. Think I made out better with the Mac Pro?