Muad'zin
Refugee
The micro synth is a great pedal, one of EHX's finest. You want your guitar or bass to sound like an analog synth you can have great fun with it. Bass guitarists I talked with prefer it over the Boss SYB-5, which they claim sounds more digital. Can't confirm that but I know from personal experience that the Boss pedal doesn't track high guitar notes at all, whereas the MS plays very well on both instruments.
As for usability, that depends on your creativity.
As for usability, that depends on your creativity.