Espresso is a based for every cafe drinks like cappucino, latte, machiato, shakerato, caffe vinnese and much more. It plays such an important role in a cup of coffee. Same goes to your milk. U will need years of experience to froth the right milk. Im using marzocco coffee machine. U will have the best opinion but not the best coffee. U will just keep looking for a better1. :-p