I currently use a Barber Launch Pad as a clean boost (+20db) and has all the boost you will ever need and is totally hand - made true by-pass.
also doubles up as DI box which is handy.
CMATMODS also does a cool boost but it aint clean, just fattens everything up.
CMATMODS sells pedals on Ebay and has his own site, check him out.
he does Ross Compressor Clone, about 3 different overdrives, Analog chorus, dealys, just about any custom made 1 at a time pedal in a finish you select.
prices are darn good too.
another one to check is ARAMAT effect pedals. top quality
BARBER ELECTRONICS
CMATMODS
ARAMAT
Google that guvnor and check it out