I really enjoy their 'Lady Grey' - & as others have mentioned: 'Toasty Almond'.
It can be hit & miss depending on how crowded it is inside but you can peruse the cute tea paraphernalia while you wait. I like that the employees have been honest with me about their own preferences & don't mind if I want to smell my 11th tea before making up my mind.
I find their prices to be slightly better than David's, but I'm sure it depends on your tea preferences & how much you're drinking/needing.