I'm not sure how we got to talking about cages, since my original question had only to do with bender types. I guess a anyone with a bender will *eventually* get asked to help build a cage. Still, I really appreciate the input.

I know the difference between pipe and tubing, and I always had tubing in mind. The bottle-jack-style looks nice 'cause it's portable, and that particular company has built-it-yourself plans. The JD2 bender looks way nicer, but I don't have a place to bolt it down. (I suppose I could unbolt it when the jobs are done.)

I'll be thinking about it.