What nutrient brand should I get?

Hey guys, how is everyone?
I am going to be getting a set of nutrients and I was wondering if I should get the general hydro nutes or fox farm. My one question is what is the flora micro and fox farm gro big mainly for?
I thought you would really only need veg nutes and flowering nutes.
Is it necessary to get all 3 of them or can I just use the veg and flowering nutes?

I just need you guy's opinions on which I should use and just a little info on what the best thing to get is. Thanks guys.

Grow Big is considered a catalyst in the FF lineup and seems to help. I've haven't used GH yet, (have the whole starter box though).

I have tried growing with just veg and bloom nutes and it does work, but I think there are some additives that add to yield. Beneficial bacteria, carbs, amino's and fulvic or humics depending on medium. Some kelp in the beginning kinda helps too.

Good luck!

Some time ago somebody invented the 2 part nutrient. Before this you had to add your NPK and macros using several different bottles and it was confusing for most home growers. You need 2 parts because one bottle contains some of what your plants need and the other contains the rest depending upon what stage of growth you are in. Bottle A has a certain percentage of N,P,& K while bottle B has the rest formulated for the plants needs at that stage of growth while bottle C is the base nutrient used in all stages... that's why there's a veg and bloom formula. You mix bottle a with bottle c for veg and bottle b with bottle c for blooming. Then there are macronutes like calcium and magnesium and also boron, iron, manganese etc. The entire line of nutes supposedly gives them all they need but some stuff is optional like root stimulators and bloom boosters. Nute companies want you to think you need them all but really all you need to provide your plants is npk and macros so you do need at least the 3 bottles plus cal/mag at the minimum.
I understand the 2 brands you list are typically the lowest cost but that doesn't mean they are the best to use. Botanicare has a line that doesn't require mixing the 2 parts; just one bottle for each stage of growth. I've never used it but it comes highly recommended by my local hydro guy... if I was looking to get nutrients I'd start there.

You don't need to buy a bloom formula really if you don't want to. I did this whole grow just using pure blend pro grow hydro formula and cal/mag. No additives or bloom fertilizer. I did this as an experiment. For my current grow I will be adding the bloom formula with the grow formula to see if blooming is improved.
https://www.rollitup.org/t/critical-dream-star.862828/page-2

I've been a technaflora user for the past 4+yrs and would take switch. Been working perfect minus a bottle change. Swapped sugar daddy for Botanica botanicare sweet raw. Cheaper per gallon, and uses only 10ml/gal vs 15ml/gal.

I have tried a few different lines . . . Honestly I have yet to see anything really outshine the Lucas formula . . . Cheap and easy. . . . I use 7 grams of maxibloom per gallon . . http://lucasformula.com