My new pick for the last year. I use it on ac. and el. gtr. mandolin, and bouzouki. It's a little brighter on acoustics than a the very expensive pick I was using and very responsive on ac. and el. gtrs. I can really dig in on bluegrass, Celtic, and Gypsy jazz and windmill a giant power chord on electric. I play acoustic with Irish and bluegrass bands and electric with rock and Americana bands. The fact that they glow in the dark cracks me up.
I'm a percussionist that has started taking guitar lessons. Trying out various picks/plectrums has been a learning experience. The picks offered have been a great option, especially due to the grip dots that are on each pick. I especially like the Radium pick options, for I have dropped and misplaced many picks and can easily find them, due to glow capabilities. Highly recommend this brand!