I have all 3, Zoom MS-60b, Zoom B3n, and Boss GT-1b. The Boss gets the most use. Zoom B3n works great if you turn things on and off a lot. Boss for set it and forget it patch style, switching patches as needed. It can do on and offs but programming is cumbersome for that. I like the Boss sounds better though. The MS-60b is fine for 1 or 2 (it will do up to 4) effects or just trying out different things and very pedal board friendly.