9 out of 10 people commenting on nutes have no clue what they are talking about. they either had a poor experience with the nutrient line which was most likely due to error on their part or they have never use the nutrient lineup and are just regurjitating what they have either heard on a forum or from their local hydro guy. the only way to actually decide whether a nutrient will work for you is to actually try it out yourself. i can tell you this much...plenty of very experienced growers here are getting amazing results using AN. there are plenty getting great results with Dyna, GH, FF, and all the others. you should run a companies base nutes first and then look at which additives will help you increase yields and quality. just because a company has 10 different additives doesn't mean you need to buy them all. often times your growing techniques, strain, medium, etc... will determine the 2-3 additives that can increase your production.