I have an M120 and I'm using D'Addario Nickel Bronze 12/53. I wouldn't go any heavier and may test out the D'addario EJ40 Silk & Steel as i always find the Nickel Bronze too bright until they wear in.
$hit, Bill.... I just now read this and i'm laughing. So let the origins of this word show me making a fool of myself on LTG. Restrung. Restrang. Restrunged? LMAO!!!Tom..."restrang" ???