FWIW to everyone, I've had no issues with Redhead boxes.
I have a Redhead in my Excursion that I installed two years ago and continues to have no issues, and I just put another Redhead in my Tahoe two weeks ago which is also entirely issue-free.
I might be proven wrong with time but I have a hunch that a large amount of the slop people complain about in these trucks after a steering box switch can be traced to the rag joint. Mine was still loose in the center of travel after the Redhead, a new Pittman arm and PS Pump went on. Switched the rag joint and it's entirely slop-free.
Given the cost difference and the amount of work required, if anyone's looking into a steering box to just tighten up the steering and doesn't have major leaks to address, do yourself a favor and throw a rag joint in it and see if that fixes it first.