The Henderson Thermoprene Suits really are very economical. The 3mm and 5mm suits both sell for under $200. They are super suits for the money. I've been a Hyperstretch guy for quite a while, but I recently picked up a Thermoprene 3mm. I was very impressed. It stretched almost as much as the Hyperstretch, and It fit me great. I recommend the Thermoprene to almost everyone that comes in the shop, and I have heard only great stuff from the folks that I've sold them to.