I wanted to limit number of my pedals and also a weight of my pedalboard. I also wanted a good looper with good MIDi implementation to control my Strymon Timeline and Marshall JVM205H.
I already have a G-Lab GSC-3 but: it is very heavy, big and MIDI implementation is so so.
Initially I wanted to buy Boss ES-5 but after reading good reviews of MS-3 I pulled a trigger. Basically I replaced my 4 Boss pedals: EQ-7, CS-3, BD-2, CE-5 with this unit and I'm more than happy! No noise, quite good noise gate, easy programming (even easier with computer editor), low power consumption (using mooer micro power to power MS-3 and 9 other pedals!).
I'm long time Line 6 user (POD XT, X3, HD300, FX100, HD500X) and drive pedals was always a weakest point of this products. This is not true with Boss!. I'm really shocked how good drives sound! I can easily replace my Mesa Flux Drive and Ibanez TS. Boss, well done!
Great product which can be used as stand alone pedal board, or a brain of more complicated setup.