... This seems to be the best full synthetic alternative. Any thoughts?
I don't see how this is the "best full synthetic alternative".
IMO Maxlife ATF is the "best" alternative. It works and is cheap.
Castrol has a good alternative as well, costs more than Maxlife, but cheaper than what you posted.
There are several synthetic Dex VI fluids out there that work well also and again, are cheaper than the posted fluid.