I was recently promoted to black belt over the weekend by Master Renato Tavares. We are currently the largest BJJ/MMA facility in the area when it comes to people on the mat. Average class size is close to 60 on any given night. It is a great atmosphere with plenty of people to train with and everyone has a great attitude. Our facility includes 3,500 sq ft of mat, 26 X 24 six sided cage, 1,500 sq ft of crossfit equipment, kid's zone, and more.
We have taken 2nd and 3rd place as a team at NAGA the whole year of 2010 and usually take away 1st in other divisions. My students are all over the place competing in CO, MO, TX, AR, FL, CA, NY, IL, and out of the country. Most taking top three as individuals at top events.
But I agree with Jimmy, check every place out and go where you feel comfortable.