I currently have a USACG 5 string J bass that's strung with TI Flats. FWIW, it has a U-Retro preamp. I love the way it sounds with the flats, but I could do with a bit of a change. For getting more of a classic John Paul Jones or even Geddy Lee type J bass tone, what would be a good set of roundwound strings? Right now, I'm considering some sort of Rotosound, but I don't know enough about them (mostly a guitar player, truth be told). If possible, I'd like to go with something with nickle-wrap over steel to save my frets, but again, I don't know what's out there? I did learn, when searching for flats, that not all string sets are equal - especially in terms of equal tension. If Rotos, which? What about the TI rounds?