I use the rf 24-105 and the rf 85mm. I cannot really compare the 85mm to the ef equivalent because there is no equivalent. The rf 24-105 it is just a little ietsiepietsy better then the newest ef equivalent. Not visible. Then there is the rf 24-70 and the rf 15-35. They both have is and might be better when you need that because you are shaky. Optically these lenses will not be much better then their ef counterparts. That is just common sense because they are already so good. Then there is the rf 70-200 which will also be great just like the ef 70-200 III. You are not going to tell me that the new rf lens will be much better. I will buy that one because it is compact and fits better in my traveling bag. What I personally like about the 'r' is the drop in adapter. It will make the use of nd filters much easier allowing me to be more creative. So I will keep these great ef lenses for the next 8 years or so

i like the r and i like the adapter. The lenses are awesome but so are the latest ef lenses. Cheers !