The OJ is brighter and more lively, and more musically pleasing my ears. again, to my ears it sounds more like an amp breaking up compared to the VMT, which i find seems dark and a lot warmer. It does subtle or out right nasty.
Obviously these are my ears and my descriptions, which could be the complete opposite of what others think, but out of all the dirt pedals ive used the VMT is my least fav. If i had the room no my board i would use my VTBass DI, although i think that would be overkill for me. I had the VMTD which was much better for me, as it has EQ, but i just missed what the BDDI gave me.