Hi there from a fellow blade silver owner.
It all depends how far you want to go to be honest.
AutoGlym (AG) is pretty good stuff and if you don't want more than just a regular clean, then nothing more will be needed.
What I and others may suggest is that you use the "Two Bucket Method" for washing, unless you do that already.
A few of us, including myself use snowfoam and other wonderous products for cleaning.
You could look into using a claybar twice a year, regular polish and waxing, to keep the shine tip top.