Vegas appears to be getting a new wave of boba joints, Infused Tea Lounge among them. The teas are pretty good, and I like how they offer a range of specialty house teas rather than just a massive menu or one focused entirely on milk tea beverages- they have a good variety.
The Matcha Lover is my go-to, and the sweetness level is fine as-is. Their Dark Knight (oolong with jelly) is also a solid option, with a stronger tea flavor than other shops. The Rose Garden is a friend's favorite that I'll be going back to try soon. ITL is out of my way, but their loyalty program and text coupons are nicely timed to lure me in or at least keep them on my mind.
EDIT: Downgrading by a star. Staff is still friendly but as I make my way through the menu, I am less than enthusiastic. The mangonada was nearly undrinkable, and the peach tea was very plain when not adding extra flavors or sweeteners.