I have not tried the Advanced Connoisseur yet myself. There is a joke around my hydro shop about calling it Advanced Con (as in getting ripped). But like anything else out there, you will never really know if it does better than anything else without a side-by-side comparison. Even a test like that may not be definitive. I say give it a shot and let us all know how it works for you. IMO people are hesitant to spend so much on nutes because anyone can have superb results with any base hydroponic nute on the market with no additives. Sometimes less is more.
On the topic of organics, some senior gardeners like Soma speak about the superb taste of their buds being a result of the quality of their soil. I dont know if its all in my head, or as a result of microbial activity, but when I boost my blooms with guano instead of a bloom fortifier I am much happier with the result.
However, my largest yields have been with "chemical nutes".