I stumbled onto these by accident at a small music store that does well to have picks. I bought them and put them on my National Style O resonator which I play with bare fingers. The sound and the ease of playing was drastic. The sound is clear and the volume fantastic. My fingers slide off of the slightly slippery coating with ease and although it may be wishfull thinking, I think I play faster with fewer mistakes. I would recommend these to anyone who plays and accoustic. For myself, I won't be buying anything else for awhile. A word of caution though, allow some extra length when winding these up on the machine head, as they are coated and slippery and need and extra wrap or two on the pegs to keep them from slipping.