Now that you have had almost 2 months to shoot with your 6D do you feel that you ultimately made the right decision?
The simple answer would be yes....for now.
While I do miss the 5D3, the 6D has not stopped me from accomplishing the things I need to accomplish. There are definitely times when I do miss the AF system of the former, but not to the point where I'm going to lose any sleep over it. For the time being, I can get the job done with the 6D AF system which will suffice until Canon puts out another FF option that lures me into an upgrade.
I haven't really had any instances where I missed the other key downgraded features although I'm sure I will at some point. Although I will say there was one instance where I could have probably used the 1/8000th.
I still haven't really utilized the wifi features very much as I don't really like the UI vs the Camranger.
My initial impressions regarding image quality and workability of the RAW files in post still remain.
After replacing the focusing screen, I have been using my manual lenses a lot more.
As minute as it is, I have noticed the drop in size/weight which inclined me to purchase a 40mm pancake. The combo is actually pretty compact considering what I used to carry around.
Also, my original intention was to start swapping stuff out and selling so that I could create a new 1Dwhatever fund. That has since been derailed as I just picked up a Fuji X-E2 with 35/1.4. Assuming this works out well, I suppose it will only further convince me that I made the right choice as I picked up the combo for basically the difference in price from the 5D3 to 6D plus a couple hundred bucks.
All in all, I still believe it was the right choice as I will now have a new toy that I will hopefully love without having spent anything,