You can do so much, with so many different lines.
With that said. I don't care for lines with all those additives and supplements. They do work (if you find the right balance) but, you can do just as good if not better with 2-3 bottles of many others out there.
A cpl of simple supplements here and there. Stopped at the proper time. Can work wonders....with them...
Everyone has something that they feel works the best....It does. That's a for them thing too.
In synthetic, right now....I like Botanicare KIND.....Their PRO line is very popular too.
I still like my organic soils best.....That opens up a whole new can of worms....