tcmatthews said:
Ergonomically I find the cameras like the 6D close to perfect. I always wanted a swivel screen on my 6D. I hate the 5D/7D body ergonomics they are just too big for my hands. So upgrading to a 5D IV just is not going to happen. So do I just continue buying Sony equipment because it is a better fit?
If you think the 6D (and by extension, 6DII, since it's almost identical physically) is close to perfect ergonomically, I'm very surprised that you would enjoy the ergonomics of the Sony ILCs :X
tcmatthews said:
I think I will just buy a 80D out of the refurb store on black friday and call it good.
Save yourself the time and just get it on Amazon now

The 80D is a fine camera. If you don't need fully weather sealed and you don't need full frame -- specifically, either being able to shoot wider or at with less noise at high ISO -- the 80D is Canon's
best choice in my opinion. It opens up the whole universe of excellent EFS lenses that cost a fraction of what's available on EF and L lenses.
Forget the price of the body: you're going to spend a fortune to get the equivalent of the 10-18 STM for your FF. And you'll need to buy a 24-70/4 at three times the price and one third the focal range to do much better than the nano USM 18-135, which is great in the middle of its focal range. The EFS17-55/2.8 is a pretty awesome deal too. Sure, everyone would prefer the EF24/70/2.8 on a FF, but look at the price difference.
Also, if you don't need all that weather sealing or f/2.8 telephotos, the EFS lenses are just way, way, way lighter. My 70-200/2.8 II weighs like... as much as 3 EFS zoom lenses plus a EF70-300.
The great thing about an 80D is that you can buy the L lens for the one focal range that it's really critical to have awesome glass for, and buy much cheaper lenses that are good enough for everything else. If you buy a FF body, there is a tendency to try to buy L for everything, even if you don't shoot that much in that FL. And then for each of those, you need to agonize between f/4 and the twice-as-expensive f/2.8, because hell, you're already half-way there anyhow.