Tried the BN's on a Pbass today. Sounded very nice. Distinct thump--almost flat-like. Nice thick tone that sounded good even the little I played with a pick. Thus far I think they sounded better on the P than that Jazz. I could certainly leave them on that Pbass and be very happy. I don't know if I liked the sound of the BNs better than the Precision flats that were on it, but I'm thinking they we pretty close in the bass goodness territory. Great strings for someone wanting rounds with a thick sound with no clank. I also noticed that they are more smooth feeling than the Fender PNs.