I decided last year to get on the R/RF train. I sold my DRL'S and all EF lenses. I'm down to an R, R5, 24-105 F4, 100-500 and 1.4 TC. While the adapters work great with EF lenses I have to believe the extra 3 pins for faster communication are doing something for me. I decided I didn't want to deal with adapter and R/RF is the future so what the heck.
I am going down the same path, albeit slowly. I sold my two DSLRs last year (5D3 and 7D2), and now have just an EOS R and M50. I plan on adding a R6 or R5 in the future. I have not been in a hurry, though, as this pandemic has greatly reduced the amount of shooting I do, as I shoot a lot when we travel, and that has been curtailed a great deal. The EOS R and M50 have met my reduced needs so far.
I am still in transition with my EF to RF lens conversion. So far, I have swapped out the EF 24-105L for the RF version (got it in a kit with the EOS R). I also have the RF 35mm f/1.8 and RF 50mm f/1.8. My next steps will be to sell off the EF 50L, EF 16-35mm f/4 IS L, EF 70-200mm f/4 IS L, EF 40mm f/2.8 pancake and Sigma 105mm macro.
I will eventually be adding something on the wide end -- either the RF 14-35mm f/4 IS L or RF 16mm f/2.8. I still need to decide what to do about the telephoto end. My EF 100-400mm L IS II will probably be the last lens I swap out -- most likely for the RF 100-500, although a RF 100-400 + RF 800mm combo is a possibility.


