Swagelok makes the very best hand tube benders. (and are extremely proud of them... look for used ones instead)
http://www.swagelok.com/search/find...tem=4f9d4893-970a-4488-a9c9-501f774bb60d

Others I like are Imperial, Rigid, Weatherhead, and Parker in no order. All are close to the design in Denny's first bender picture.
I'll try for a picture this evening.

I think I also have one Reed bender but like it less because the little holder is fixed, it doesn't swing out of the way like the rest do.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-