I used this string on my Les Paul. I really liked the sound of it. But it was a little too hard to play. I mean, it's ok. But when I wanted to make some little more ambitious bendings -more than one tone and a half- it was a little uncomfortable. Then I started to feel a little tendon bother. So I decided to swap to 012. Way more playable. Normally I wouldn't consider this a negative aspect. But I used to play 013 B strings -from other manifacturers- for years and I've never found them that hard. Anyway we're talking about Pyramids, a really good company which makes really good strings. All I had to do was to find the right size for me.