I haven't signed up at a gym in a long time and have recently been convinced to sign up with LA Fitness. Great idea! Especially at the Camelback location.
This place is huge! Tons of machines, Olympic pool, cycle room, and the largest workout room in town for classes. I have been taking the kickboxing and yoga classes. So much fun. Kickboxing will kick your ass for sure, but it's totally worth it.
They also have a great kids club room, where you can have a place to drop your kids off while you work out. My friends daughter goes there all the time and she has a blast.
They have had some pretty great deal lately as well. Go visit Chris and have him sign you up.