Ridgid benders are junk...
The cheaper Imperial Eastmans are junk...(The ones with out the swivel handle)
The Imperial Eastman's with the swivel are great. (After awhile, you actually look like your running nun-chucks because they swivel and go back into your coveralls so fast.)
Swagelok are the most expensive, and heavy tubing benders ever...but, they are roller benders, and are VERY accurate on their bends. (90* on the benders is a 90* bend...not 88*)
I have bent tubing over the last 20 some years, from 1/8" to 3/4".
I use Imperial Eastman's with the swivel handle....once you know where the bend is exactly 45* and 90*, you can be just as accurate as the Swagelok benders for bends.
Faults of the Imperial benders:
-After awhile, the chrome starts to peel off and scratch the tubing...and cut your hands.
-They deform the tubing on bends. (You can NOT slide a nut around a bend that was done with a set of Imperial benders. But on Swagelok benders you can...which proves that the Swagelok benders DON'T deform the tubing at all.)
Faults of Swagelok benders:
-Way too much money.
-Huge PITA doing a 180* bend. (Have to unscrew the handle, turn it, and re connect it to make a 180* bend.)
-Don't like how they "Clamp" onto the end of the tubing....this WILL crush the end of the tubing if you turn the tubing the wrong way for a bend after you have "clamped" it to the tubing.
-Too heavy.