from what I've read and from my own experience, the metabolism bump from
DNP is very closely related to the dosage. I've always gone on the assumption that each 100mg means about a 10% bump in your body's calorie consumption.
I've only done 200mg and 400mg of Heretic's stuff. 600 would make me totally miserable. I know that i lose a lot more on 400...twice as much, maybe more. But I do drop on 200mg, and I feel good enough that I could work out, do cardio, etc. I really can't do much at all on 400mg.