This has got to be the hardest question to answer, period !
There is no "one best"! (I know that's not what you asked, but many may answer in that context.)
The way you grow and how you do it is by FAR the most important factor for perfection.
Most synthetic makers give you fairly aggressive feeding schedules. The ability to cut through the hase and know how to employ them with out over use of some parts (usually bloom foods) is the key.
What do you want to achieve? Good pretty green plants all the way though? Skip the P boosters ! Will they work,,,yeah, but most over use them because the makers want to try and match other makers stupid claims and not be left out of sales.
All right, here you go.
Hesi is damn fine stuff.
Canna is damn fine stuff
Dyna-Gro is damn fine stuff. The easiest to use too.
Cyco is damn fine stuff.
Let your wallet do the talking...
AN works,,,,,but I refuse to make money for such a greedy cheese ball outfit !!!
I don't LIKE H&G....to many parts to use on a sliding scale of use.....Don't like what it does to the soil.