As many flights as I take around the world i think this is only my second airport review. More coming.
As Atlanta is my home airport that is unfortunately my frame of reference.
Phoenix is much calmer, efficient, organized. More charging stations. More and cleaner bathrooms than most other airports. Security friendlier. Information staff has been helpful.
Rental car is 10 minutes away, but so is Baltimore and let's not compare to the mess at ohare. But is much better organized than most . Buses go to each terminal separately.
Overall, probably one of the most comfortable "large" USA airports