Trying to start a rivalry?
Most people would say Gustavo Dantas or Megaton is the best place to train in Phoenix but I don't know anything about Tuscon and other places in Southern Arizona and there are very few places to train in Northern Arizona (I train in Flagstaff with people who are mostly students of Megaton). Clearly... Dantas teams did the best at the last BJJ tournament Dantas put on based on points, followed by MMA Lab, but having visited Dantas' gym I believe Megaton has less students so it might be difficult to compare based on points alone (also the other two schools have people training MMA professionally whereas Megaton focuses only on grappling).