Sound , then playability, but the playability has to be up to a certain level or it doesn't matter how good the sound is, because there's something else out there that will play better and sound as good, but if it sounds really nice I'm willing to put up with some difficulty of playing . Edit: that's for acoustics. Electrics , maybe the other way around. It's close , either way. One should have both sound and feel. Anything less would be uncivilized.