Not so great on acoustic as you can really hear the pick slide through the strings. On electric however, wow does it fly through the strings with ease. I'm just crossing into the intermediate stages of guitar and have been using the thin picks for ever, with .60 being the thickest. Someone told me try thick as they are easy to pick & strum with. So, during these crazy COVID times where stock is difficult no matter where you go, this was one of the options for a thick pick. For the price, it's a great introduction to thick picks. I could give it a 5, but there is another pick out there I like better, but the 4 isn't a knock. You can't really be disappointed at this price range honestly. Myself, I would prefer a slightly larger (not thicker) size, which they have just not in the store that day that has the holes in it for grip. This thing tends to move freely in my fingers.