I didn't care for the PPB I had, or the clips I've heard of the Sleeping Dog, so I vote Aftershock.
The Aftershock has amazing potential and versatility, but to get the best out of it requires a lot of dabbling around in the Neuro app. Check out this vid, especially near the end when he blends a muff in parallel with a Rat:
http://www.youtube.com/watch?v=x8UnQDrlFAk
Then at the flick of a switch you can get tubey overdrive or Darkglass style grind. Great pedal, but I've not had time to mess with mine properly yet!