The standard of the world, as far as I know. What's not to like? Been using them for years and years, must be pretty darn good for something. I find that material and shape are the most versatile among flat picks, Just soft enough to sound good and be grippy and hard enough to hang onto and dig in when needed. The color helps to spot them in my bag or when dropped. For me, these replaced the previous standard, which would be the venerable Fender Medium.