I got to choose this distortion as a birthday present from the bandmates and I did not regret at all. It immediately became a great addition to my rig and tone. I use it to enrich the high end when soloing or as a booster on heavy riffs, where the main drive comes from my amp.
I didn't really get the usage of the little "voice" switch, it cannot make much difference, except for a little boost in the high-mids.
It is actually great that I have a little EQ option with the bass and treble knobs, The distortion is equally reactive on single coils and humbuckers, but sounds more like an OD on single coils, where one can play very heavy riffs with humbuckers.
It looks and feels quite sturdy, body made of metal and the pots move smoothly.
The LED indicator is bright enough, one can easily see in direct sunlight.
I would recommend the distortion to anyone who seeks rich tone and heavy distortion as well as booster and addition to existing distortion.