Tim Jones
pfm Member
They are expensive, but they have a reputation for lasting pretty much forever. I guess different rules apply to flats as you aren't chasing the bright zingy sound of new round-wounds at all, so as long as the tension doesn't go up too much (which it doesn't seem to) then they should be good for many, many years. The set on my fretless have been on for a few years now with no issues, though I don't play it much as I'm still pretty crap (I'd probably be better with a lined fretless to be honest, mine just has dots on the binding, which clearly isn't enough!).
The Elixirs on my ACG fretless have been on for around a year now. Despite some heavy, summer, sweaty playing and even a few gigs, they sound fresh as a daisy.
Tony, btw, if you play unlined fretless all the time, going back to lines or frets feels weirdly counter-intuitive. Muscle memory takes over from sight cues.