I've taken my daughter to 3 other gyms in the area, and after Upper Merion, Philadelphia Gymnastics Center is the best. My daughter loved Mr. Gene and the pit. My daughter seemed to progress quickly and it was great (after my experience at Pancott Gymnastics) to be able to watch the classes. The class size was pretty good (8 in the group) but Mr. Gene made sure the children were always busy. As a parent though, I think the lobby needs to be updated and a heavy dose of deodorizing, and could use better parking and air conditioning. But if you can get over the aesthetics, long sessions, and limited choices, this is a great gym for the instruction.