I just took the factory rounds off my Hagstrom and installed D'Addario Chromes (medium scale to allow for through-body stringing). MUCH improved sound. The bass has a bit of a metallic sound on some of its six pickup settings, and the rounds augmented that considerably. The merest brush of a finger made the string sound like it was being attacked with a file.
The Chromes both mellow the metallic quality and eliminate the "zing" from finger contact with the strings. Happiness with the sound is being achieved!
Now I'll have to see how the string tension affects the neck. The lower frets are really close to the strings, so I have the action higher than normal to eliminate fret buzz on the first fret. Hopefully these will allow me to lower the action a bit.
As you can tell from the bridge shot, these were taken when the rounds were still on it.