dependin on which model la. my friend's epi lp pickups SUCK. they have the worst microphonic problems ever. brought it to jam once and was nearly thrown out for making huge amounts of muddy, bassy feedback. from then on i NEVER used his guitar again. =X
My epiphone explorer is kicking my gibby sg's ass in the tone department right now...I don't know if it's 'cause of the pickup or the type of wood the guitar is made of...most probably a mixture of both with a lil dash of luck :lol:
generally, i find stock pickups really lacking... and yes, epi lp pickups are the worst, cuz they are so muddy... but then, the pickups also depend on your personal preference and what type of music u play as well, yes?