I was just curious for the feel of another version of light top/heavy bottom set and gave it a try. Quite a change after Zakk Wilde boomers, ha, ha. YJM are very playable and allowed me different style of playing, light pressure, easy licks. They were keeping their sound for two years of not frequent playing, GHS Fast Fret was sufficient to revive them to life every session.
CONS. 008 string has pulled itself out of the ball end. As I had no replacement at hand, I used crude repair: wound down the string, put on a ball on a low end, made a knot on string with thin pliers (don't pull too tight not to broke the string), then wound up the string again. It needs some force-bending of the string to properly set the knot, yet it will hold then. Cut the string short and cover the sharp end not to get sting with it.