JSI is probably the best IMO. They're up off 85 around Jimmy Carter. They carry thermoflex, siser, and their brand. Plus probably a lot more. They have always had what I needed. Now that gas is so high (I'm down by the racetrack), I just get them to ship it to me. They don't really have a showroom per say, but there is a garage sale rack and a few displays. They'll probably let you see anything you are interested in. Back when I was curious, they gave me a quick tutorial on how to do bling. Doing it is easier than selling it now apparently. A lot of sign or screen printing places will carry thermoflex, but they're pretty proud of it. I quit even looking around and just go to jsi since it's the cheapest I've found. I wouldn't mind seeing a few more with good selection/price pop up though. Maybe even further South.