I have been training at Dragon Gym in Exton since 2009-- the instructors are experienced, dedicated and well respected in the industry. I have found their pricing to be a great value for the education and simple to understand. I started in the Muay Thai class and am now doing kettle bells as well. The kids classes always look like the instructors really know how to relate to the children and there are always a bunch of parents watching classes from the observation area (I don't have kids but it seems like the ideal set up). I couldn't imagine a better, more supportive training environment!