I just picked one up for fun. I prefer going straight into the amp, but this pedal is pretty decent. I haven't been able to use it as a transparent boost (as I sometimes do with with a Lovepedal 4-knob Deluxe), but still it's a good match for my setup when I want to add a little dirty kick.The Joyo American Sound (blatant ripoff of one of the Tech 21 character series pedals) gets almost universal praise on the guitar boards.
I really like the Mosky Obsessive! @AcrylicSuperman That is definitely on my list of wants now!