right now i have this b-50 (emg ltd), and i really like to play it, but i'm thinking of switching out the pickups. i've never used active pups before, but thought i may give it a try. a friend of mine told me to give the emg-pj set a look, but i don't know the difference from one to another. to make things even more difficult, it seems that people say different pups will sound different in every bass, so i can't see any way to test some. my bass has the ESP LDJ/LDP set (these are not active).