Brew Tea Bar has become my favorite place to go to when I'm craving milk teas. At most other places I get Wintermelon Green Tea or Passion Fruit, but every time I come here I go for their milk teas.
My personal favorite is the Okinawan Milk Tea. It has like a brown-sugar taste to it and has more flavor (to me) than my second favorite there, which is the Hokkaido Milk Tea that has a more caramel taste. Can't forget the tapioca...their tapioca is alway the right amount of soft and chewy and makes the drink even more enjoyable.
If you go earlier in the day it's usually not too crowded, but usually from like 3pm-until closing, I've never seen it not slow. Despite how busy they get, they still manage to get the drinks made very quickly and I never have to wait more than like 2 minutes. If you're ever in Las Vegas/South Las Vegas and want your boba fix, this is definitely a place to try! I live on the exact opposite side of town, but many times I go out of my way just to get my boba drinks from them :p