I've owned more drive pedals than anything else in life, like clothes and dinners. Prior to this, my main drive was split between the Caroline Effects Wave Cannon Mk1 and a custom GoldSoundz Leopold, and though I still use those effects for other stuff, the Caveman demolishes everything. A heavy-duty overdrive on the left hand side, the boost on the right hand side is fixed, giving a pretty generous lift to what is already a hench tone. I'd be the first to admit that this is a particularly dark drive, and I run it with the tone flat out to get the upper content. The v2 is a bit more adaptable in terms of having a pre/post switch for the gain, and being a larger unit. The Mk1 is no longer in production, so if you see one clamber all over that thing.