Upload & Sell: On
I just switched to Nikon from Canon. Over the years I had pared down my Canon system to a 5D, 24-105L, and 35L. The 5D, while still good, was getting long in the tooth and I wanted an upgrade.
However, both the the 5DIII and D800 were too much camera for me, in that as nice as they are I couldn't justify spending that kind of money.
Three things caused me to pull the trigger on a switch to Nikon: (a) the D600 with a better AF than my 5D and sensor, (b) the 6D was kinda meh and didn't seem like a big enough upgrade from the 5D classic or 5DII (the AF system in particular seemed like a "f-u, we got you by the balls" move by Canon), and (c) the Sigma 35/1.4 was announced, 35mm is my favorite focal length and prior to the Sigma, the Nikon 35/1.4G didn't seem worth the huge price increase over the 35L.
I sold off the Canon stuff and got a D600, a 50/1.8G, a Sigma 85/1.4 and preordered the Sigma 35/1.4. So far I've been extremely satisfied, it took me a couple of days to get used to the Nikon controls, and have in fact found that I prefer the Nikon way of doing many things (the only thing that I'm still getting used to is the direction I have to turn the lens to mount it on the body). I'm especially thrilled with the high ISO capabilities of the camera.
As for the lens selection, I really haven't sweated it because I only really want/need a 35 and an 85. Well, also a Zeiss 21/2.8 but that's pricey on either system.