I just sold my mac pro on my sig and will use my mbp as my main machine. I noticed that either would be more than powerful enough for my usages. I know for the past month you guys seen me posting and asking about whether to keep or sell the mac pro. So for the past week Ive used my mbp + 23" acd as my main machine and its more than fast enough! Also the I love the dual screen mode. And its nice to pocket the 4k! Not to mention the portability when I need/want it. Also I bought OWC fw800 3.5" external hdd and installed a seagate barracuda 1 TB hdd in and works like a charm. Especially when you want to extract huge 15+ gb files I drag it onto the external hdd and let it do its job feels exactly the same as the mac pro. And I don't really use any pro apps so its plenty fast!