Currently I have a late 2012 iMac. perfect machine, with the exception of the display is getting these dark smudges/contamination. my 2011 iMac developed a huge dark spot/contamination lcd over the display. I was thinking of upgrading to the refreshed 2013 iMac 3.5 with 4GB GPU. but am concerned with the all in ones continually having these weird screen issues. so i was thinking a base model macpro with maybe 512GB SSD upgrade and the 3GB GPU option with a refurbed Thunderbolt display. Most of my storage is on my Pegasus 3TB unit, so internal storage is not as critical. I dont think I need a huge amount of processing power, just enough to play gpu intensive games, final cut pro x, aperture, Adobe CC ps, lightroom, premier, etc. has anyone gone from the iMac to the new Mac Pro? like it better it being modular vs all in one? thanks!