Peppermint is like a poorly biased hot fuzz face. Ashbass Fuzzbrite is perfect for 60's biker fuzz. Have you checked out the ehx satisfaction?
Merkin with battery is the ****
The life-blood of a fuzz is its power supply and the Merkin is no different. Use a carbon battery for warm vintage tone and smooth response. Use an alkaline or 9 volt dc supply for a harder sound, or run on 18 volt DC supply for even more output and an aggressive sound! Volume unity for the Merkin resides around 9:00, which means there's lots of boost on tap.