Haven't tried either one yet but I have some Amsoil that I'm waiting to install. Amsoil is considerably more expensive but apparently both are very good and quite popular with forum members. Can't go wrong with either.
I used Amsoil SS Fuel Efficient ATF in my Chevy Equinox which are known to be hard on ATF. No filter to change. It requires a Dexron VI spec and Amsoil SS meets and exceeded that. After only 10k miles on another so-called universal ATF it was black and foul smelling. Had some minor hard shifting and noise. OIl analysis showed high wear metals. My dealer did a complete fluid exchange using Amsoil SS ATF, after 12k miles, it is still bright red, issues gone, and wear metals are 1/4 of that of the previous ATF.
Which ever brand you use, complete a full fluid exchange and filter change if possible.