I can't speak for the other clean boost pedals out there, but I've got a Bad Bob Boost that is irreplaceable. I leave it on all the time because it's a tone-maker-better. It does something to boost clarity and give new life to the amps (Blackface Twin and DRRI both with Delta Pro 12A's) that I use. Without it the tone sounds very flat on both amps. It not simply an issue of turning up the amplifier, the tone just isn't the same without the Bad Bob in the chain. Do all clean boosts add this fullness and dynamic beauty to your tone?