Hi Acolmiztli,
Iīve had the very same problem, I loved the A-bomb, but it got muddy sometimes in my les paul.
Iīve changed to the RY, and I can ensure you, they are very similar to the A-bomb just without the muddiness.
Similar mids, more highs, and a better defined, not muddy bottom.
I love the clean sound now, and its just balls-out rock when you drive it hard. does any kind of metal extremely well, too!!!
Hope this helps!