I'm in the same boat as you
@Jase I'm coming back after being in camp Canon and Sony. I do miss the Nikon colours and the way photos from the Nikon bodies seem to be more realistic with how they are rendered although this might be a personal opinion. I too left Nikon after I found the AF on the Z6 was holding me back, and the AF capabilities of the R6 were just too tempting for me!! Since then the AF on the A9 has been the best I've had - however the longing to return to Nikon has meant I have my eyes set on a Z9. I intend to use it for weddings, and a gripped body and twin memory slots which are the same has made me desire the z9 more than the z8. Also the longer lasting battery