I put a pack on my guitar a few hours before a show. Felt pretty good, sounded fine. Played the show and everything went well, didn't really notice a difference from any other string. The next day I sit down to record some dumb musical idea I had in my head, and the the high E snaps. Didn't even last 24 hours. I know everything is subjective, but for something that advertises itself to last longer, sound better, and all that jazz... I'm just not impressed especially with the price point. I can get a three pack of strings that are cheaper and tried and true. Also, star picks are weird.