Huge variety of flavours that all taste amazing. I've only tried about six so far since I've a tendency to stick with what I know sometimes. I do love the four different size options: personal 8', small 10', medium 12', and large 14'. For those with allergies, there are gluten-free and dairy-free options as well!
Versatility in salad options, including the ability to create your own salad the way you want it.
Only problem with the pizza is that they're so good, I always have to add more walking/running to my day to work off the carbs! Haha