I bought a chamber from TurnTex for several reasons:
Chambers are made with care. The quality that other users state is true. These things are made excellently. They are sturdy, work great, and easy to setup.
Curtis’ reputation on International Association of Penturners.org is huge. I have read several forums on stabilization and he is everywhere, with helping in all forums from years back.
Its a small business... although, I live in California, I try and support ALL small businesses.
Quality in a person and product is always a solid card to play.