The “best” hops variety is probably going to hinge on your particular preferences for flavour. There are a number of popular varieties but cascade and citra seem to enjoy the highest percentage of use in beer recipes. Other popular varieties include Mosaic, Magnum, and Centenniel, but you can also mix them and experiment with other additives as well. The so-called “New World” hops are popular because they are able to impart fruitier flavours. View recipes and tips for brewing here.