I've been a member of Smart Gym Thunderbird since it opened a couple of years ago. Overall pretty good gym, newer pretty clean equipment. The staff is friendly except for the gym manager. He's pretty proud of himself as he sits at a desk in the front lobby and walks around the gym with his nose in the air. Whether he's working out or just walking around with other members he's in his own world. He's never friendly to other members and when you do talk to him he's pretty rude and self entitled, a possible juice head (steroids user). Customer Service 101 - be friendly and remember the customer is the reason you have a job.
Update...new gym manager so it's much better as of Jan. 2016!