The tea can be expensive here but the tea here is more authentic than David's and Teavana. This place mostly sells Chinese herbal tea and has a bubble tea counter inside.
Pros - this is stronger tea than your normal David's and Teavana tea. If you can't handle some of the stronger tea at those two stores, don't recommend this place, however if you are really into tea like me, you'll love it. Also Ten Ren has been around for ages, as it was a chain in Chinatown since I can remember (so at least 20+ years).
Also, the lineup is shorter here than Bubble Tease by the theatre.
Cons - It's expensive. Bubble tea is mostly powder.
Verdict - come here to buy authentic Chinese tea and if you don't want to bother with the lineup for bubble tea at Bubble Tease.