And there is nothing wrong with that statement, except most of the time us wheelers start off with the intent of building a mild rig and by the time we're done its a bit more than we planned on. Knowing that most of us also hate to have to redo things we've built or bought, including cages and saftey equipment, I'd have to say build it once with better material and be done with it. The "it's good enough" approach has gotten myself and many others in trouble when we find out it isn't. You can use HREW, you can use Sch40 but why use thicker material to gain the same strength you would have with DOM. All you've done is add weight, and lost some of the cost savings you think you had with a lesser material by adding wall thickness. And if you decide, that wasn't a good enough reason then take into account that peoples lives could be at stake with a cage you or I built. I feel safer in a cage thats DOM over the other two, Im sure many others would too.