Yea I agree with Ricky. We all have our favorite thing we use. and if one takes a step back they all must be pretty damned decent or they wouldn't stick around. Folks can argue if one has slight edge over the other, but I have a hard time beleiving if you keep your plants healthy overall and you feed them Nute Company ABC and someone else uses Nute company XYZ that you'll double his harvest all other factors the same... I like my h16 line, thats 6 bottles for whole line. Roots, Prime, Fire, Finish, Base A, Base B, plus foliar. The bottles aren't cheap but they go a long long way.... Ford vs Chevy. Guys will argue one is the only answer, I've seen both be great for people and both brands have some lemons.
If you have a nute line, unless its god awful, I'd never say dump it to buy a different. Use it up, then experiment when you buy more. If a lines new to you see if you can get samples or buy the small bottle till you know you like it. I really think its more about learning how to use whats in the bottle than one bottle truly being better than the other...