I haven't tried the Rebel Yell neck yet, but I wasn't a fan of the Diver neck with gain in a Les Paul.
Compared to the CS neck, it felt like I had to work harder to play the HD neck, if that makes sense. And I thought it sounded hollower. Where the CS neck played/felt smoother and sounded fuller. Emerald neck is next on my list to try...maybe RY neck after that.