Actually using a set of GHS Black Nylon Tapewounds on my fretted Jazz Bass and they sound great.
Warmer than roundwounds, of course. Nice upright sound too.
I happen to switch to my Gibson fretted with roundwounds for a more "grungy" sound (1 year olds) but these GHS are really worth the money if you re into jazz, pop, rock.
I have been using GHS Brite Flats on my solid body basses for years. Maybe I'm just used to the sound, but I like it along with the feel.
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"Digo: 'paciencia, y barajar'." -- Don Quijote de la Mancha, Part II, Chapter 23 / Fender fretless #3 TX bassist #48 fretless #233, Fender P #242, Godin #21
GHS Strings 
