I have been on a mid-2014 2.5ghz i7/750m 15" rMBP and love it. Great and powerful machine. I just recently bought a 5k 27" iMac with the 4.0ghz i7, 16GB Ram, 2TB Fusion, m395. The iMac is a great machine. Love having the huge monitor, 2TB HD, fastest i7 CPU, etc. But after a few days, I think it may be a bit redundant to have spend $2300 on it while I have the rMBP 15 which is about 75-80% as fast. I do a bunch of podcasts and video editing in Final Cut, which is why I bought the 5k. Tons of horsepower and the real estate too. I guess I am looking for suggestions. Should I return the 5k iMac and just wait for the revision of the rMPB with Skylake i7s and pair that with a 4k monitor? Or justify having both?