I have spent more hours here than I can count - and even if there were no traveling special exhibits, I'd find something new every time.
Granted - I am that person who spent over an hour staring at a single Kandinsky a few years back. I do have real appreciation for the special exhibitions.
I also appreciate the sculptures in the courtyard, the miniatures, the Asian collection and several other pieces from the permanent collection. One of the advantages of being in Phoenix is the accessible parking (happily also along the light rail) and the reasonable entrance fees. (To the people who gripe about the museum and theater prices in Phoenix - go to NYC, San Francisco, Boston, Chicago, etc. We have bargains in comparison!
Having lived in PHX for as long as I have, I've watched the museum grow. Section by section. I appreciate the modern lines and use of light throughout - and given how many additions have been built on over the years, it's still architecturally coherent.
The cafe is a nice pit stop, and the gift shop is well stocked and has something for everyone. There are great events through the course of the year - and annual membership is well worth the price for how much you get in exchange!