No, I haven't had experience with MB7 (unfortunately), because it is not directly available in Europe.
I use Prodibio Biodigest, and I'm happy with the results so far. But I would like to try MB7.
My dosing schedule right now:
Prodibio every two weeks 1 ampule
0,2 gram Table sugar/day
0,25 ml Vodka/day
0,25 ml Vinegar/day
Sometimes the amounts are changed in relation to SPS color.
Leonardo