Goodbye Canon. And now - Nikon or Sony?

I have been waiting for Canon 6DII for ages. Now when the waiting is over, I know that my path with Canon is at its very end. The question is - will be Nikon D820 (possibly D850) everything I need? Can I somehow avoid swichting to Sony which I’m pushing away from me for last 14-16 months? The reality is that dynamic range of all Canon bodies is nowadays such terrible comparing to other brands that although I hate switching anything in my life, the moment of a big change is knocking at the door.

Hello?! Who’s there?