What fertilizer do you use?

I have gone through quite a bit on poducts.
Some very harsh some borderline useless.
I've settled on fish emulsion. Two different types out there. One being straight fish emulsion another being a blend/mix.
Both are pretty good abd have a well rounded NPK ratio. Only issue its avout 22 bucks a gallon.. good news is if used efficiently it will last 3 years.

So what do you use?

I have heard alot about synthetics usually alot of paranoia on the subject of how much the plant absorbs and is transfered to the edible product. Im still on the fence