I don't use NPK additives with DynaGro* so to make it fair, I wont be using them here. I do use and could use magpro as it has sulfur and magnesium as well as a booster-like NPK ratio, though fat mike doesn't agree with the higher phosphorus content of that product. So to stay true to AN's philosophy of higher potassium and not so high phosphorus, I'll probably add nothing at all as sulfates are not going to make the difference either way in this grow. As you said, AN claims that Connoisseur is the top-of-the-line nutrient on the market which was
supposedly put together by a team of 12 PhD's. We shall see if the performance matches the hype
.
In regards to any 3 part, DG proved itself vastly superior during the time period where I ran them side-by-side. So much so that I've got about 5 gallons of 3-part that will never be used indoors again.
*full disclosure, I am using ProTekt (0-0-3) in this grow.