I usually use 11's, so this is a big big jump for me. They are suprisingly good sounding, they stay in tune, even with extreme overbending, there is so little tension that you can do weird stuff with them, but you got to be careful on pressing with your tapping hand so than the notes don't go over the pitch. Also, a lighter pick attack is perferable, they are not for chugging, but damn, on my LP, now I know why Billy is playing them.