Metallic silver is biologically inert. It has zero effect against pathogens in the human body, until it gets converted to ionic silver by shedding silver ions in the presence of acidic bodily fluids."
Stomach acid converts metallic silver back into ionic silver. Steve says that Ionic Silver works faster than metallic because conversion is not needed.
They both work, but ionic is faster because conversion by stomach acid is not needed.
So is the higher price for Mesosilver justified? probably not, according to Steve. In my opinion, Steve's word is the Gospel. I have not caught him lying yet.
I just ordered my new Silvertron Elite CS Generator this week, with a 1 oz Silver Bar electrode: https://www.youtube.com/watch?v=lOKnp9Y54Ls
I will use it to make 20ppm Ionic Silver for my family & friends, and I will be comparing my Mesosilver against home made Ionic Silver. IMO, my home brewed ionic silver should work just as well as my Mesosilver. I expect this report next spring.