These strings added so much in terms of volume and string definition when I added them to my Epi Les Paul Custom; it blew me away. In fact, the added volume and brightness was so much that I ultimately switched back to regular D'Addario XL's, since this was just too much in my face tone, all the time.
I prefer a smoother tone for rock and blues, and these strings were definitely not suitable for that, especially combined with the already quite high-output probuckers in the Les Paul.