I'm an OrangeTheory addict, but fell in love with Fit36 during a recent visit to Phoenix. Fit36 is a 36-minute HITT class with different weight stations around the room. The class starts with the trainer showing you the exercises for each station then you partner up to work your way around the room twice. You spend 1-minute per station, and 30-seconds for recovery in between. I'd highly recommend checking this place out! I wish that they had these in Florida. I'd love to add this to my regular mix of workouts!
Also, I think you get an entire week for free when you first try it out!