I didn't read all this ********, but I have a bunch of the HF 25" 1/2" Breaker bars and they are great. They flex but work.
So, I came across a Snap On 24" 1/2" Breaker Bar and I got that sucker to flex a whole lot on loosening (actually tightening a reverse thread...oops) 11/16" bolt on HK Porter #5 bolt cutters. (The HF was flexin all the same.)
So, then I came across a Snap On 3/4" drive 36" Handle, the breaker bar swivel, and the ratchet head. It does not flex. But it is a heavy SOB.
That being said, I still want to get the Titan/Tekton whatever it is 40" 3/4" breaker bar for $50 on Amazon....