I have always had comfortable and easy experiences at Sky Harbor in the past, but I must say I had the best experience at the PHX airport last week which really topped it all off!
Traveling at Thanksgiving time is not for the faint of heart with long lines, pushy people, and lots of crying children everywhere. Not once did I see the staff at Sky Harbor even grimace. Everyone I encountered was so genuinely friendly and helpful, from the rental car shuttle driver, to the TSA agents, to the counter workers. I forgot to remove my liquids from my carry-on (gasp!) and the agent who inspected my bag did so quickly and sent me on my way with a "Happy Thanksgiving!" I have had similar issues at airports in the past where a simple search may turn into an ordeal. The lines moved briskly despite the throngs of people and the airport is nice & clean. Terminal 4 has a Paradise Bakery and free wifi. I really couldn't ask for anything more.