I have and use the Blackfire combo, most recently on my black DD. I do firmly believe that "the pop is in the prep", meaning it's what you do before the wax step that makes the difference. If you did a 50/50 panel with the BF fire/ice combo on one side and Meg's Ultimate Wax topped with either gold Class or M26, it would take a very discerning eye to notice the difference.
Bill