Twirl is a great little place. Situated between the Campbell and Central/Camelback light rail stops, there is also adequate private lot parking. Inside there is usually up to about 12 frozen yogurt machines with a variety of flavors. One of the highlights -- they label them gluten-free, fat-free, or no sugar added. Topping selection is on par and the seating area is nice, if not that huge. Definitely worth a stop.