Here is my take on the whole thing. I came from Nikon so I had all Nikon mounts. Leica 19mm converted with Leitax mount which i need to sell, Sigma 35mm 1.4, zeiss 135 F2, Nikon 85mm 1.8 and Zeiss 35mm F2 all in Nikon mounts. So after a bit with the Sony I just decided that nikon really has nothing to offer me anymore and really nothing new hit the streets that I had my eye on. The D4s is just not my need and was hoping for 36mpx or above updated D800e so i threw in the towel on them and started thinking Sony all the way. So i converted my Leica R back to its original mount and get a Metabones R to E adapter and thats working great. Re bought the Zeiss 25mm F2 in Canon mount with Metabones III adapter since it gives me all Exif data and aperture in camera. Love the combination but I came really close to getting the ZA 24mm F2 but I knew how good the Z 25mm was so I went back to it, than I added a Voightlander 40mm Ultron in Canon mount since I have the adapter for Canon. I kind of like the thing very small and compact. I did not have good luck with the 35mm FE lens, had a bad copy. The 55mm 1.8 FE I have a amazing copy of it. Than on the 85 and 135 I decided to go ZA with the Sony adapter since I can still get AF when needed. I'm really happy with my setup and the A7 and A7r but I need the 24-70 FE lens pretty badly for PR type stuff. Im actually thinking of selling the 55mm 1.8 to get it but this one is so damn good I hate to get rid of excellent glass when i have a outstanding copy of it. But I need to figure out what to do on that. I need in long glass a FE lens to get my AF points where I need them but that 70-200 is something I can rent for my shows i do. Outside of that there is pretty much nothing I am lacking functionally. So its a tough call and i had to decide the same thing hang on with Nikon mounts or move on. I decided moving on was the answer for me and I am hoping Sony keeps on innovating and taking things to the next level as i feel Canon and Nikon just died in there tracks. Im thinking ahead here.