I suggest Renegade Muay Thai Kickboxing Fitness. They are affiliated with Killer Bees gym (Anderson Silva's gym). His BJJ instructor Alexandre Penao is coming on April 10th for a seminar. He will stay here for 2 months. He is a 6th degree black from Carlson Gracie. http://www.renegademtk.com/team.htm
The muay thai intructor is a black belt and is a pro mma fighter too. The team is very strong and they have a lot of different classes with different focuses. I am waiting for the MMA program to start - it will be awesome!!! They don't have a cage but they have brand new equipment and a ring. I strongly recommend Renegade.