Very subjective, you may as well ask, whats the best magic trick in the world. It depends if you want a colour change, a pop out move, or a concept that can be used to vanish, change of flips cards. Dont know too much about Vintage Holdout, but I dont think it can be done with any deck, but I think that and Fontaine contain the most content, if thats what you're looking for. If I were you, I wouldn't buy any of it for the sake of buying a trick from Zach, watch the trailers for them, is there anything you really want to perform? Then buy it.