Drip System | Vegetable gardening | Hydroponics farming in India

Hi
I am setting up my rooftop garden (Ornamental and Vegetable) in Delhi. I want use a drip system. I will create a 4 zone system and i have two questions.

1) Has anyone on here used pepperagro or Jain. - whats the difference? Jain is more expensive, but is quality better?

2) Am i better putting larger emitters into the big pots (3ft round and tall) than what is in the smaller pots or just add more emiiters of the same Lph.

Thanks in advance