the quad aa were awesome before you needed aa gunners to use them. they are still very
good for dunk, however you need very high level aa gunners to use them effectively, thats
why nobody is using them.
I do have very late classed aa gunners (rld capped), and i would say aa its not worth it
on most uk bbs. The only BBs i found it usefull are renown/repulse, QE, QV, dunk and maybe
hood. But keep in mind by the time your AA gunners get usefull you wont use this ships
As for using the D/N/L of the rp10, they are OKish, but too heavy for my taste, or leave
you with to few AA shells on many BBs T-Slots.
I Normally only use the rp10As, or the pompoms. QV with pompoms is quite something, it
makes you rather hard to hit by DBs :P