Good place to go after a solid work out, tons of supplements to fulfill your needs and great service by their knowledgeable employees (can't vouch for every single one, but the one I've been dealing with most recently is great).
I'd much rather make my own at home, which is why I don't frequent juice/smoothie bars often, but if I need to replenish fast then I'll just pop in and pick up a Pure or Decadent smoothie.