I have only used Alembic CX-3 on my 5 string bass. My 4 string came to me with Roto Sound Swing Bass (?) 66, I think. I went a couple cycles with those, then switched over to CX-3 for that bass, too. I have some Ken Smith taper wounds that I'm gonna try at some point. I use them on my other basses. They're more readily available in the Detroit area than CX-3, though I don't mind mail ordering my CX-3 strings.
Peace,
James