I've been a Rotosound player for most of my musical career. And although I love the sound, the brightness I so appreciate wears off after about a month of playing. I decided to try a brand I'd heard good things about, and see if they could not only deliver the same sound I like, but also retain that tone longer.
D'Addario XL Nickel Balanced Tension strings are world-renowned as "The Player's Choice" amongst bass players of all genres and styles, and I must say, I understand why. Not only do they have the same excellent intonation, clear fundamentals, and unparalleled consistency, so far, the tone hasn't lost any of it's distinct brightness.
I also like the feel of the strings, not too rough and not too slippery, with great finger feel. And the D'addario strings are even a couple of bucks cheaper than the Rotosound strings. It seems I have found my new brand of strings. Do recommend.