Best airport by far with the best airport food you'll ever find -- all the local Valley favorites, including nearly all FOX restaurants make an appearance here. Did you know that Matt's Big Breakfast is opening a spot here? How amazing is that? If you don't know what Matt's is, Yelp it.
I find Sky Harbor to be very clean, friendly staff, great shopping to kill time, and of course, as I mentioned, ridiculously good food to make it unbeatable. Consider yourself lucky if you have a layover in PHX as you can get 5 star food while you wait.