This is like asking “who does the best espresso martini in the world”. I mean it’s possible that you could zero in and split hairs on which meets a certain set of criteria to be the best but past a certain point a few other factors come into play. Does the person drinking it like froth, do they like beans floating on the top of it, are they hungover, have they gone without water for 2 days and just need that sweet hit of liquid, etc. The best wedding photographer in the world is someone who not only takes great images, but is someone you could imagine knocking down a wine with and being stuck in a confined space for an hour.