Yay! I'm a fan! Unfortunately, Tropical Smoothie Cafe did not survive in Honolulu and after two trips to this venue on my past vacation - I am sad that none exists closer to where I live.
Overall, I think the quality of the smoothies is better than Jamba Juice, who I think puts waaay too much sugar (e.g. yogurts, sorbets) in their juices. Tropical Smoothie on the other hand has more choices of smoothie drinks without the extra sugar, hence lesser calories. Their sandwiches and salads are a great option too!