I see a lot of post of people not really liking the OD models on the M9/13, but I honestly think the TS model is very nice. I've used just the M9 for quite a few gigs and rehearsals now and I think my tone is better than with my pedals. For the past year I've been using a Barber Tone Pump, 1/2 Gainer, and a Carl Martin AC Tone in steady rotation, but now I leave them at home. The M9 is clear, fat, warm, woody and natural sounding in a way that really impressed me. I play in a roots rockabilly band and I'm a bit of a purist, but the tone I'm getting is what I've been after for quite some time. Good job Line 6!