4 channel pre packs that I'm sure many of you are familiar with. Do any of you have any experience A/B'ing these two side by side? I'm interested in recording rock-n-roll bands and these would be for drums/guitar. Probably SM57s/AT kick mic going in to them, running the kick/snare/toms and guitar cabs. They are about the same price, just curious to see what your feelings are and what applications you use them for.