What can I say about Ten Ren's, I believe it's the best consistent bubble tea place in the city and I drop alot more money here than I'd like to admit. Every time I'm within range of Chinatown and I drop by and pick up a peach green tea with tapioca.
Maybe it's just me, but I do prefer Ten Ren's over other places in the city (168, Destiny, GoforTea, Cha time) Their drinks are sweet, but not overbearing. The texture of the tapoica/pearls are always on freaking point. And they don't dump on a ton of ice like the other tea houses. Price is a bit steeper than other places (50 cents more) but it's well worth it.
As with any Asian place DO NOT expect good or any service. If you don't know what you want then LOL good luck. They barely speak English there so it will hard for them to give you a recommendation.