I was looking at the aggressive pedal thread and was thinking "What's the most aggressive overdrive pedal out there?" I was testing out my CoolCat Drive and Berhringer BDI21 on my bass. It produced a super aggressive sounding tone (way more aggressive than when I pair the BDI21 and a Proco Rat together and much less thin sounding) even when the BDI21's drive was a little over half way. The pair sounds pretty sweet but would probably only be usable in Extreme Metal settings like Grindcore, Thrash Metal (Slayer style), Black Metal, ect. The CoolCat itself is very bright and aggressive on guitar but even meaner on bass. I'm wondering if there are any overdrive pedals that are even more aggressive on bass (price and slight low cut doesn't matter)? I'm not talking about fuzz or distortion pedals. What do you guys think?