I've come here twice since moving to Pittsburgh. The first time with Ali I told her to do whatever she wanted (I'm notoriously bad with haircut directions) and I thought it was the best haircut I'd ever had.
Then I went again, tried to get Ali but she was booked-got Zach instead. That became the best haircut I've ever had. Really I assume they know all what they're doing and you can't get a bad person there. Not to mention both trimmed my beard down far better than I ever could.
Hands down the best place to get your haircut in the area. I'd gone to other places but now drive out of my way to head here. The amenities and ambience are also great, but I went for a good haircut-and I got it (twice).