I did sell one of my two R5 and added a R5c as I posted in the other thread.
At the beginning I was not too happy about the R5c but now I like it more than the R5 other than the battery issue that basically makes it a rig only camera. And I did not buy it due to the time limit as it was not an issue for me other than 4k 120…. Initially it was for the 8k 60 and audio on the 120fps.
I filmed 5 days of MTB and 2 days of Surfing in the last two weeks, and I reach out more to the R5c (A cam) than the R5 (B cam).
They are quite different, the R5 even more with the new FW is a really good hybrid, the R5c is a cinema camera that you can turn in a great photo camera, it seems the same but when you use them both you realize the differences.
Plus for the R5c:
8k 60 RAW
4k 60 much better quality than R5
4k 120 with sound and noticeably better quality than R5
S35 5.9k RAW
XAVC much easier to edit than h265
Face only AF, AF around the point only
Cinema OS makes more sense for filming.
False color, waveform, magnification while recording etc…
Customization of what to show in which screen VF vs LCD vs HDMI, safe marks etc.
Port protector let you flip the screen
Media playback UI, I really hated at first, but I discovered how to control it with the touch screen and joystick (not the wheel as I was used) and is better that the R5. Still lacks lut support and a quicker way to delete videos imo.
Plus for the R5
Battery, battery and battery so no need to rig it and cables that can break etc...
More AF zones type, Animal and Car AF
IBIS (although I find it a problem in some cases like on gimbal with long lenses and wobble on wide angles)
Faster switch photo video (I thought that the R5c would bother me but for my usage is non issue and I do switch quite frequently)
C1-C3 modes this is so needed on the R5c
Bigger UI font
Wifi works in video mode too (this is ridiculous on the R5c that only works in photo mode)
AF the way I use it is very similar in term of performance some stuff are better on the R5 and some on the R5c I really wish they would merge the two functionalities.
If it would not be for the battery challenge, I would probably sell the R5 and get a second R5c.