It all boils down to individual taste. There are a lot of people that love CRKs...and a lot of people that don't. I think I have 6 CRKs now - 3 I've had for years, the other 3 came in the last third of 2022. I like some things about all of them; but none of them "click" with me. I still want to like some of them; and I'll probably try to force the Umnumzaan back into my pocket again (I think I made it two weeks last time before it fell out, and haven't touched it since.)
If they appeal to you on any level, try one - it's an itch that won't go away until it is scratched. If it's not for you, they're easy to sell & there are plenty of other options.
Huh - guess I never actually posted this... I'll do it anyway, even though you've already got one in hand and another coming.
I generally prefer larger knives; but I prefer the small 21 over the large. (Never tried a large 31; but I assume I'd find the same.) Personally, I feel the large inkosi feels better in hand than a large 21 (again, no large 31 for comparison). The small inkosi is too small.