yeah i had a boss mt 2 and i thought it was sh*t, that was years ago though.
i have a pearce BC1 and can cop all his tones easy peasy, its all about whacking up the mids at 1khz, in the books ive got it shows the exact settings he used for certain eras.
my favourite has always been the distortion sound on the PARK album, which is just pretty much the gain from channel 2 of the pearce.