I would never touch Goldemgevity, and I have followed their hype and lack of expertise for years now. They burst on the scene a few years ago claiming that their unique process had been revealed to them by aliens (seriously), gave away a booklet on transmutation of lead into silver with each purchase, claimed that their product was made up of single silver atoms (an impossibility) and did not know the difference between particles and parts per million (PPM), and I am still not sure that they understand the difference given their advertising. Plus, if their PPM content is correcttly stated, it is absurdley high. Those who actually know about colloidal/ionic silver will tell you that anything over 20 - 30 PPM is overkill, particualarly if the particle sizes are small enough (though few are).
You are right about Sovereign Silver being a relatively inferior product, imo. What they have going for them is a superior sales effort that gets their products in the hands of resellers, but not a superior product at all.
I have long followed Purest Colloids Mesosilver, which is an absolutely superior true Colloidal Silver product which has the smallest particle sizes you can find. My own personal favorite is another true Colloidal Silver product - Advanced Colloidal Silver from CureZone sponsor Utopia-Silver . It too has ultra small particles, a bit higher ionic content (perhaps 15%) and a bit higher PPM (they recently increased their PPM to 30). I will freely admit that I am prejudiced since a lifelong best friend of mine is the owner of Utopia-Silver and I have been an affiliiate for years.
Either way, you can't go wrong when it comes to getting a far superior silver solution, in my opinion - and I am not aware of any other products which even come close. Lots of products out there and no end of hype trying to convince you that their mostly ionic products that they call colloidal silver are somehow uniquely superior. They aren't.
Given the context of your original question - Mesosilver versus Goldengevity, my vote is Mesosilver hands down.