I liked the Cobb Knob too, it certainly did help make my shifts more positive and precise. But the texture of the metal bugged the hell out of me so I put it back in the box after a week even though my shift action/accuracy was much better. It sounds clunky as hell the way I've written it here but what I am trying to express is that the mechanical movement of my arm whilst shifting was improved by using this part. Yay ergonomics.
I am sure this is personal preference as my buddy has the knob in his FOST and loves it. It's the same friggin part.
Feel is very important, and much like sound, it's going to be very much "personal preference" with a shift knob.
I'll tell you what though you'll love that friggin RMM - I could never go back to stock now.