That was the worst coffee shop experience I've ever had. And there isn't a close second.
If your definition of a "high end" coffee shop means snobby and condescending servers, long waits when no one else is there, marginal (at best) and overpriced coffee, and very few options to make your coffee the way you like it - then this is definitely your place!
Wow, I've drank coffee all over the world and in some of the best coffee roasters in the country...including Intelligentsia in Chicago where 21st sources their beans. You would never be treated that way there. Never. The barista acted like she (they) had discovered the meaning of life and us Pittsburghers should be so grateful to have them share it with us. Newsflash - pour overs and direct trade coffee are not new to the coffee scene. Get over yourself 21st. I could have let it all go if my straight black coffee was a fine cup, but alas...
My advice? Save your time, money, and taste buds and go to Espresso a Mano in Lawrenceville, Cannon Coffee in Brookline, La Prima in the Strip or any of the other joints in town that serve great coffee without the condescending attitude. I wanted a good cup of coffee, not a lecture and a marginal one. What a waste.