Mule or Rebel Yell I'd say. The Rebel Yell is a bit hotter with more mids, so it seems to cut a bit better (may work better in Epi LPs, due to the lack of maple cap, so its not as bright as a typical lp?).
I'm going to try the Rebel Yell in my own Epi LP Custom some time, I think that it might sound better than the Mule, as I said before, because of the lack of a proper maple cap - its alder instead apparently, which isnt as bright.
I have Mules in it at the minute, and its a really versatile guitar - I play anything on it, mostly older hard rock such as ACDC, GnR, Zeppelin etc., but its also my main guitar in the cover band I'm in - playing anything from Oasis/REM up to GnR and Sabbath :)