I was wondering how often double bassists will change their strings. I'm considering getting strings for somebody. I play guitar but not acoustic bass, and I know double bass strings are much more expensive, and they get replaced less often, but i'm just wondering how often, and also actually, if there perhaps some different sorts of preferences of strings or sort of strings that some people swear by, that others may not have tried. Something like elixir nanoweb strings for acoustic guitar. Someone may have never tried coated strings before, but they are awesome, so, something like that, but in the double bass world, might make a cool gift.