This is a great location, you can sample any flavor you want, and the reusable cup is a great deal.
The only downsides are - this place is always super busy, but they move pretty quick considering. Also, there aren't as many places to refill the reusable cup as you would imagine, and other places that are not the same brand won't give you the discount refill price.
But on the plus side, you can also mix flavors, which is really the best way to get more gulp for your buck.