I'm using the Rocco Strings on my Marcus Miller Jazz Bass (4 string) and they're great; currently, I'm figuring out that action is a big deal because the E and the A strings are really fat. Slap is great sounding but like I said, the action really needs to be low otherwise you end up fighting those strings a LOT.
I noticed in the rest of the forum regarding strings that light gauge are the way to go; I've never tried them on the jazz bass but I have a feeling that I'd lose some of that acoustic fatness; but I'm sure some amount of eq'ing will do the trick.