Shameless plug again.
A Bakemono Metalzone is the one. Large chug sound, has a MegaTubescreamer mode, has variable clipping stage (via the Warp knob) which allows you to change the fullness or fizziness of the distortion, Pre-Bass control (allows you to tighten the sound if the bass is too flabby), goes from clean to full metal using your electric guitar's volume control, and when you twiddle with all of them (including the 3-band parametric equalizer), will allow you to get or approximate the tone of many dirtboxes in the market. I had fun making a Metalzone sound like a TS808 with mid-hump. Yes, it's true and it's possible.
To hear is to believe. Visit the shop dude:D