I have a Peavey Millenium BXP 4 that I'm considering doing a pickup upgrade to. It has passive J type pups, a basswood body, and I use light gauge nickel rounds. I play a wide variety of styles on it. I really like this bass, because it is light weight, and has a nice neck. I'm not sure whether to keep using single coils, or hum cancelling, although I generally use the neck pickup only most of the time. I'm thinking maybe DiMarzio's, or if I decide to keep using single coils, maybe the Seymour Duncan SJB-1's. What do you guys think? Thank you for your suggestions.