Jaco put 10 coats of Marine spar varnish on his fretboard so he could use Rotosounds to get that tone and buzziness he had.
As for D'Addario Roundwounds, thats the only roundwound I'll use. I find their tone, consistency, longevity, feel, and price beats out other brands hands down.
I use the XL 170's and XL 170-5's, 45-100's, 45-130's. On my Fretless, it's D'addario Chromes ECB-80's 40-95's.