I've been to a lot of airports and I have to say that I think Phoenix Sky Harbor Airport is probably one of the most user friendly. They need to do some work in baggage claim, with better signage and maybe see what can be done to speed up luggage delivery, but the gate areas and shopping are pretty darn good. I like parking in the garage but it's a bit pricey for me and the economy lot parking shuttles are too slow for my taste. So I either get a ride or use an off airport parking lot as they seem to be faster. if you have a long lay over, there is plenty to keep you entertained while at Sky Harbor.