Crazy busy airport with long wait times at security. Plan ahead!
That said however, this is a pretty decent airport. There are plenty of food options with both local and national chains, there are cute stores to buy Southwest themed treats, toys and take-homes, and the walkways (once you're through security) are pretty wide. I also found the bathrooms to be tidy as well as the carpets in the gate areas. I know that's odd to mention but dirty carpets really gross me out and this airport seems to be nicer than many I've been to recently. Go PHX!