I got this unit looking for an affordable and compact way to add some character to my sound, in the form of a chorus, and what I gained in return was more that I was bargaining for.
I have this pedal hooked to one of my Carl Martin's octaswitch loops, and couldn't be happier. The stompbox delivers a fat, warm analog sound, very rich in frequencies, and it is a true bypass. It's basically a 3 in 1, since you can choose among chorus, vibrato and rotary.
The construction of the stompbox is quite rebust despite its size. The knobs and controls are simple, easy to read and understand, and they don't feel flimsy or easy to break. Again, despite of its small size you can easily tweak the volume and the intensity knobs to suit your needs. The modulation selector in the middle seems a bit more delicate than the other controls, but I've been using this heavily for over 8 months and I have not encountered any problems with it.
Something I don't particularly find useful on Mooer's in/outs is that they don't align on the chasis. In my particular experience this hasn't proven to be a useful thing to save space on the pedalboard, but again, it's a matter of taste.
I would recommend this pedal for those in a budget hunting for a great sounding tiny stompbox with chorus/vibrato capabilities.