This is my favorite center city YMCA. It's extremely convenient, being that I work in 2 Wells Fargo. But even when I'm not in the office I try going to this YMCA. I typically go to Body Pump on Saturday mornings, which is a great class, and I frequently swim here as well. While I enjoy the pool at Johnston more (it's a warm pool) the pool at Childress-Klein works just fine, and the aquatics director, who is usually onsite, is very friendly and gives me tips while swimming. It's not nearly the size of Dowd, but it doesn't get quite as crowded and has a more welcoming vibe, in my opinion. I especially like how it has different rooms where you can go stretch after a workout, and not feel like you are in the way. If you can deal with the hassle of parking (they validate within a very limited window of time) it's worth checking out.