A few months ago I bought a "Great White" from Joe B. at airtanksforsale.com. I didn't want to spend an extra $100 for their protector/carrier which looked to me like it was worth about $10. So I put one together from scraps laying around the workroom for $0. Yeah, it might look a bit ghetto but it's very stable and at least as protective as the $100 one. It can be laid on its side and when filling can be easily pulled out to inspect the dates, etc..