Its not what you use its how you use it that counts. When nutrients are used properly they become a valuable tool just like lights and co2.
I have ran both, never side by side but a few of the same strains and my findings are that organic will produce approx 25% less in your final weight. As for flavor and tast, about the same. It is more critical to make sure that you leach a little longer and let your medium dry out before harvesting plants based on chemical nutes. This will result in a clean product, at least as clean as organics.
This is my opinion of course, from my data.