If I were you, I'd expand my list just a little bit. If you live in Houston, you have a great Hot Spring dealer by the name of Richard's Total Backyard.
Sunbelt is not known for great quality. I have a good friend who does nothing but repair spas. He has made a pretty good amount of money off Sunbelt customers.
One thing I found is that their seats are not comfortable. They don't recess their jets so you feel them in your back.
If I were you, I'd look around at Hot Spring, Sundance, D1, etc.