4 u, i would recommend the LSS, loud enough but not too loud, not too heavy. M4's weigh a lot. Sounds wonderful, very versatile. Those looking for more gain from their LoneStars should try setting the ch2 drive, gain & treble knobs to 9 o'clock & then vary the presence according to taste. This roughly the equivalent of bypassing the tone stage but My LSC sounds fantastic like this. The M4 has more gain, but the LS won't mask the tone of the guitar as much imho.
regards
regards