tomorrow im going to guitar center, i have two pedals in mind

the Metal Muff with Top Boost


the MXR M-108

im using a valveking stack and i play mostly punk stuff all the way up to really heavy hardcore/metal, but sometimes i like to dabble around in alot of older classic rock

the lead channel on my valveking is really muddy and too thick, would the mxr clear that up?

ive been using a distortion pedal(digitech death metal ) through the clean channel and it sounds pretty good but i dont like how i cant turn down the gain so thats where the muff comes in

what would be a better choice