I love the smoothies, even though the cost is outrageous. The skinny angel food is my personal favorite - around 250 calories for the smallest size. Still a hefty amount of calories to expend on a drink, but it's very filling. I tried it with the protein booster, but that diluted the flavor considerably.
The small size is around $4.50 (20 oz). Right now (April 2015), they're running a Friday special: $5 for a 32 oz. which is a great deal.
Service is fast and friendly. Location is convenient (overstreet mall level of One Wells Fargo).