I like the laid back atmosphere of X3 Inman Park and that you can still do very substantive training there at the same time. The gym has a good atmosphere and is full of friendly people all looking to better themselves. What more could you ask for?
I mostly take the bjj class, and Daniel is an awesome instructor. He takes the time to answer questions, and give extra help when it's needed. He's always friendly and really cares how his students perform. I mainly train at x3 inman because Daniel is the bjj instructor.