I've found that string selection is very much a personal preference thing, maybe more so than any other part of the bass (well, tort is right up there as well). I've found strings that others rave about I'm not that keen on, and some stuff I like others hate. When you think about it, strings are right up there with pickups on what makes a bass sound the way it does.
Case in point - Cobalt rounds. Tried them out based on all the rave reviews here on TB and found them to be exactly opposite of what I wanted in sound and feel. Ripped them off the bass almost as fast as they went on. But did find a great use for them. They are such an aggressive rough surface string they make excellent finishing tools for slotting a nut. Brass, bone or tusq nuts are all easily worked by the Cobalts.