Delicious food and a good value!
I've been going to Rocket Burger for years now and I can't get enough of it every time I pop in. Their Teriyaki burger is sublime, among the best I've had (including "gourmet" burgers) and the fries are the perfect balance between crunchy and fluffy.
The selection of sodas are to die for, there's something for everyone.
Though the price is more expensive than a meal at In-N-Out, the difference is well worth it. I spend around $8-10 every time I eat there for a burger, fries, and a bottled drink or two.
This is definitely a must-have for anybody in the Phoenix area.