What is the best kind of bacon?
I assume you mean the "American-style" bacon made from pork belly, and not back bacon/Canadian bacon.
Kati prefers hers uncured, but I don't have a strong preference one way or the other.
The bacon should be smoked (applewood or hickory being the methods used by our preferred brands).
It should be sliced not too thick, and it should be fried slowly over low heat while it is allowed to drain, so that the fat that is rendered does not end up submerging and deep-frying the remainder of the bacon. Microwaving bacon on a bed of paper towels can also achieve this. You'll know you've found the right temperature because the fry bubbles coming out from under the bacon will look like soap suds.
--Patrick