21 choices is great in that it has the mix ins and the frozen yogurt factor, but while they do have good flavors, they only have a handful of choices per day, so if you go, go with an open mind, because they probably don't have the one you tried and liked so much last time. But you can always do a plain frozen yogurt and add mixins so that it's almost as good. I'm a fan of ColdStones, but 21 choices is pretty good. The prices are okay, about $2-6, but nothing like Yogurt Park in Berkeley, which has the same concept but you can get a huge 16 oz cup for $2.25 or a quart for $3.50.
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