http://www.e-cigarette-forum.com/forum/vip-vaping-phoenix/433114-directory-local-az-vendors-updated-regularly.html
I have been to most of the shops in phoenix.. if i had more time i would give you more than just a brief overview from the standouts..
Buttout is good.. They carry indigo vapors tobacco lines.. worth the drive just for that.
This Old Vape Shop - Awesome dude, carries a lot the buttout flavors.. some indigo. and Big Willies Custard. north valley..
Vapor vortex carries the JVapes line.. yummy stuff. they also have the Mad Murdock line.. interesting flavors..
AZ Vape Club is pretty awesome. They carry all the boutique juices, and a huge selection of them.