Among all the airports that I travelled to, I like PHX especially Terminal 4 that is used by Southwest and American. The terminal is well laid out and there are plethora of food options.
More than anything, the best part of it is that the terminal looks new and that adds to the charm. The restrooms are well maintained as well! There is also the XPress massage parlors so you can relax all the more.
The mountain view from the airport makes it even better. Good airport to transit or visit.