Fortunately I'm the lucky owner of a Emma Reezafratzitz and I just dig that little red wonder (to pun at Mad Professor :P). I would highly recommend it to anyone who's looking for a overdrive/distortion pedal. It can go from light crunch to roaring distortion and its unique bias control lets you dial in anything from Marshall to Vox. Just lovely!
A friend of mine uses Emma's envelope filter for bass and that sounds great too.
I haven't tried any other of their pedals, but from clips the Pisdiyauwot sounds like a great metal pedal.