If you have a suppressor or are willing to get one, 6.5 prc is so much fun to shoot, for me. Depends on the rifle setup I'm sure. But I went from a Browning Abolt 300wsm (no suppressor) to a Tikka T3x 6.5 prc with suppressor and it's incredibly fun to shoot and practice with. Immediately installing a Limbsaver recoil pad helped perhaps. I went from dreading practicing with the wsm to just loving the 6.5 prc and shooting a lot more often. Similar barrel length, 23 vs 22, respectively.
I also have a 6.5 CM I shot a lot last year (no suppressor) prior to a hunt and it was a great experience. My suppressed prc seems similar in felt recoil to an unsuppressed 6.5 CM, maybe less recoil with the suppressed prc. I'd lean more towards suppressed prc in enjoyment over the CM unsuppressed. Same barrel length.
That said, I want to buy/build a 6mm something someday. Making my way down the smaller caliber rabbit hole.
So if you can/do have a suppressor, it opens up some options I think. For me, big no to a muzzle brake.