I have my Mavic 3 Classic and my RC Plus in one case along with 3 batteries and small accessories. I have my Mini 3 Pro in it's FMC case along with my RC Pro and 4 spare batteries along with various filters.
If you have used an RC Pro, it's the same functionality. Slightly better range, built in mic, bigger/brighter screen. RC Pro is 1000 nits, RC Plus is 1200 nits. It fits better in my hands as well.