After a long lapse, I'm back to coming here because my class pass was about to expire.
I love this place! They have a very good scheduling system complete with an intuitive app, "MindBody" and a built in feedback system - my phone always asks me how the class was on the way out.
Prices are quite affordable, I bought a 20 class pass for $200. After a while you learn which class times are less full and which teachers are your favorites. Right now I'm loving anything of Lydia's, Catherine's and Melissa's. I haven't gotten around to trying all the teachers' classes since returning but I'll keep updating with more recommendations as I do.
I've only been to a couple classes in two years that were overcrowded.
The decor is rather bland but it's very clean.
Try to approach heading south on S Tryon or you'll have to make a U-turn to get to it.