Tried these out for the first time. I usually play on the standard slinkies, but I read up on the Cobalt strings and they seem to have a lot of popularity, so I wanted to try them out myself. I am 15 year guitar player, currently using a Fender Strat. These strings might be my favorite I've ever used. Their tone and resonance is very distinct and graceful. And, of course, you're using Ernie Ball strings - so the slide and flexibility of the strings are unmatched. Overall, I would highly recommend for anyone using a mid-to-high tier grade guitar.