fox farm at 1/2 strength, not 100%(like 98.8%) organic but its fairly easy to use and cheap!
plus theirs so many different things and honestly everything is on the shelf for a reason, because it gets sold, and it gets sold because enough people get results from it...this goes for everything pretty much.
i think nuits unless your a hydroponic wizard really is just preference.
now that i realized you said "hydro" specifically, i'd say check out you tube channel/user "sublbc" his channel is a master and pretty much everything he uses is from advanced nuits!