Alrighty, I'll try and explian my problem as best I can. I'm starting to get a little frustrated with the sound of my bass, and for good reason. I play an older (early-mid 90's) Alvarez, which I've realized is a pretty decent bass except for the crappy pickups. My question is: what would be the best brand of pickups to put in the old one's place? I'm looking to get a pretty versatile sound, I would like to be able to get a good slap sound, a good finger funk sound, and a good aggressive rock sound. I've very seriously looked into replacing them with some Basslines pickups. Mainly I've been looking at the Quarter Pound P-bass and Quarter Pound J-bass pickups because of their high output and their frequency range. What I need is some feedback from anybody who uses these pickups or has a better suggestion for a brand that I should look into. I definately want passive pickups that won't require a pre-amp and if it helps, any pickups that would work well in a swamp ash body. Thanks.