I actually went even more drastic. I went from an R5 and R6 (primary and backup) to two R6s about 3-4 months ago. I still have the R5, but it's used in a dedicated copy stand setup for something else and not for general purpose shooting like my two R6s. I know a lot of wedding/event photographers that went from 5DM4 or the original R to the R6. Do I wish the R6 had more resolution? Heck yeah, but at the same time, I primarily shoot portraits and headshots and weddings and events and most of my work is either printed at book size or used directly online as profile photos, and frankly, if your output is 240-300 pixels per inch on paper (or even smaller for screen), the R6 is more than enough resolution. I have grips on both my R6s and would love to do 2 R3s, but they're just too expensive, so two R6s is where it's at for me for at least the next couple of years. If I absolutely have to have the resolution, I can take the R5 off the copy stand and use it, but in all reality, the R6 is plenty of resolution for my type of work, and for stills photography is basically a mirrorless 1DXMIII with two fast SD cards. I used to have an original R (before the R5) and still use an RP for my personal camera and in all honesty, from a resolution standpoint, I'm pretty hard pressed to see sharpness differences between them without looking at the metadata to see which is which. I'm sure if I take exactly the same shot with the same lens but different body and compare them I'd see the differences, if I pixel peeked, but outside of that. Nope. They all look sharp and I'm rarely cropping in so far that my final output isn't still scaled down.
