I played D'addario XL for years. Since I was a kid, actually. Way back when they came with a sticker with cows wearing headphones, and that's been a minute. But once I started playing actual shows I realized that nickel strings just don't hold up, and I sweat a lot. Now that I am where I am I want things to last awhile and I don't enjoy changing strings. I've done it during a song and it truly does suck. So with these I don't have to worry about changing them before every show and they're pretty tough. It's rare for me to break an E string now.
And no, I'm not being paid to say that. I'm not Slash ;)