I moved to AZ a few months ago from NYC, where I lived in a neighborhood of great Vietnamese restaurants, and have eaten my way through the Vietnamese enclaves in Boston and in Hong Kong -- and this place ranks up there with the best of them. You can tell how authentic a Viet place is by the condiments when you order: the right kind of basil, mint leaves, and limes. This place has all that correct, and their fish sauce is perfectly seasoned: not too sweet like some faux-Viet places, and just the correct color/taste. I'm lucky that it's down the block from my new home, and I can run in whenever I want. The pho is right-on, with really tasty and rich broth, and I also love the noodle cakes with grilled beef. 

Only complaint is that I find the price to  be slightly higher than what I'm used to in NYC (of all places!). But it's only about $1-3 off per entree, and I understand it may cost more to get their supplies to the desert.