Hi guys- I am typing this from a 2006 macbook/ 2GHZ Core 2 Duo with 2GB ram and 512gb 5400rpm HD. It is in clamshell mode driving two (2) 23" 1080p monitors. I get the second monitor using an H.I.S. USB to DVI adapter. You would actually be surprised how well this old girl powers this rig and runs snow leopard. Gotta love mac! ANYWAY... As you can see I have been waiting a very long time to get a new computer and the time has finally arrived but I am really torn on getting either a RMBP/512/16 or a maxed our AIR/512/8. This thing is going to be with me for another 6 years so I am willing to pay the extra $1K for the RMBP but I keep on coming back to the fact that 90% of the time I will never see the retina display because it will be in clamshell mode!!! I should have an iMAC but I really need to be able to take my computer with me to work from time to time. I hate the weight of my macbook now and would love to have the AIR for its size... but the kicker is- I really miss playing Call of Duty. 6 years have gone by where I cannot play COD because my macbook can't handle it and it would be amazing to be able to play it again. I have searched the web for info on the HD4000 VS the M650 and it looks like I just might be able to get away with a little COD from time to time on the AIR with the HD4000, but on the other hand I am so sick of using an under-powered machine and would hate to shell out $2.2K and not have the option to play a some COD. Also I have not been able to find any info regarding people gaming on either of these note books on an EXTERNAL display. I love the idea of being able to ditch the H.I.S. USB to DVI adapter on the RMBP, but I am concerned about the weight, and also the fact that it is a REV 1 product and the air is on it 4th generation. So... What the hell would you do??? Should I grow up and give up gaming permanently, or should I splurge on the RMBP? If you made it through reading this post I am sincerely thankful and would honestly love to hear your $.02. THANKS!!!!