My husband and I frequent Chompie's quite a bit (at least once a month for breakfast).
I will be honest: the service is hit or miss. Really really great, or you wait 45 minutes for your food. But it's the food and the reasonable pricing that keeps us coming back. We're from Boston and like many Bostonians, we prefer to support mom & pop places rather than restaurant chains when we can. The food is great! There are a lot of options (traditional, simple, Jewish style, etc).
My one biggest complaint/suggestion for the star's rating:
PLEASE, for the love of God, come up with something better than throwing hot coffee over a cup of ice for "iced coffee." As an iced coffee lover, there is nothing more infuriating than that. It's Arizona, it's hot, and people will drink it if you serve it! That alone would bring me from 3 to 4 stars.