I'll try to keep this short enough so that you can read my review in the time it takes them to make a sandwich...
Super friendly (expect every employee to greet you when you enter)
Super fast (so fast you'll freak, as they say). In fact I parked behind one of the delivery vehicles and my first thought was that I was able to be attacked when I heard this dude sprinting from the store to his truck.
Super yummy - I get the vegetarian sandwich, no cucumber. It has a nice zesty avocado spread.
PS. Minus one star as the Phoenix-area locations don't serve any of their sandwiches with sprouts (contrary to the menu).