I read a few threads on this already thanks to the Search button, but I figured I would ask anyway. What I'm looking for is a preamp to beef my tone up (mainly to get that 'growl') and dirty it a little bit. I play mainly thrash metal, so mids are important, so that leads me to the MXR. But I just want a little bit of distortion and I love the ampeg sound...which leads me to the Sansamp. Which do you think would suit me best? Thanks.