I have my opinions but I just don’t believe that the nutrients make the plant all that it can be.
Absolutely they need nutrients but from one brand too the next they are using the same elements from the same periodic table.
I would suggest refining your hydro grow skills as a top priority and go with a nutrient line that is cheap and simple
The Lucas formula is easy to follow and works well and rarely causes the plant to burn.
Here’s an article that explains how to do it with several different types of nutrients