Not sure what the big deal is with the 24" model. In the truck mine is 35" OAL. Granted my wife's 20" CTR is 31" OAL. Both are plenty handy. That said the same load in the 24" shoots them roughly 150 fps faster. Not a huge deal but it is a difference for sure. I think both have their merit but if I were to have just one it'd be the 24". I have plenty of other true compact rifles to work with.
However, I agree with above if you already have a 26" barrel 26 Nosler then the 20" CTR is a no brainer....especially at $882 shipped!
