Every guy is gonna have to find a balance depending on this application, one size doesn't fit all. There might be a "best" choice, but that will be different based on the vehicle.
Justin who last I heard had an issue with redline in the zf, also was the first to report cold piston slap with 5w30 redline in the 5.7. Well now we know for sure that is a thing in many trucks. While that formula is built to kill hot oil tick, it is too thick at start up when that engine has some tolerance issues, so in those trucks it seams like 0w30 redline was the answer, or biotech mixed with some other oil.
If anything, what has been revealed at ram forum over the last ten years of trial and error, is how finicky these machines can be, and how great they are when you figure it out. When my truck was hemi ticking, could not wait til I bought a new truck, figured that **** out now all is good. Don't question it, just figure it out, it isn't the fluids fault but even the fluid built the best clearly can have a downside, figure it out.
Ty some things, and go with whatever works, and when you figure it out, stop trying new stuff and just stick with it. If buying the cheapest maxlife atf on a short interval is working for you, well we knew this for more then 5 years with shawn on eco diesel, something to consider if a boutique let you down. It isn't personal, it just is what it is. For 8 speed transmissions working hard or hot 225f+ or both, try some things, find what is best, it is most likely not going to be the same product for everyone no matter how the fluid is made.