I know tone has a lot to do with your amp and the audio engineer and stuff. No need to explain it. But I'm in the market for new strings. I have a 50s P bass (not made in the 50s, but the current 50s model). I'm looking for something that straddles the line between bright and thumpy. Something percussive that doesn't sound like a tuned-down guitar, but also something that's articulate and can be heard clearly in the mix. The tone I'm looking for, as I've said, is Geezer's tone on the first two Sabbath albums, in addition to Roger Glover's tone on In Rock. I don't want this to be yet another rounds vs. flats debate, I'm talking about these specific sets of strings. All of these are medium gauge.