I have been going to Orangetheory (OTF) for a little over a month and feel a huge change in my body and mind. I love that they track your heart rate so you know just how hard you are working! I've visited a few OTF locations but this is by far my favorite. The staff is awesome and it is huge in comparison to the other locations that I visited. I love the consistently good workout that I receive. Our favorite trainer is Jerid although the other trainers bring the rain too! If you're in the east valley I definitely recommend this gym, plus it's next to back yard taco so you don't have to worry about what to do for lunch or dinner after your workout. Win win!