You're talking fretless, right? I always used rounds on my fretless.Right now, Ernie Ball Cobalts with a C from a leftover set of D'Addario HalfRounds.
Personally, I prefer D'Addario EXL Nickels, but my paying projects are blues and rock (more Classic than modern) and rounds give me more mwah than is really appropriate for those. With the Cobalts I can dial in some mwah where I want it without having to fight 'too much.'
I'm asking about fretted Roscoes. I know Chromes have been mentioned.
