Really it's a matter of opinion but people do have very strong feelings about organic or non GMO feeds. If your marketing eggs/meat and in a healthy living conscious area then the higher prices you'd sell for would compensate the higher costs of feed. If neither of those things matter to you...
Are you looking to feed soy free? Organic? Products with more animal protein? I guess I don't know what your trying to accomplish.
Unless you say what your looking for you'll get a plethora of responses.
Let's say you want a good feed that is soy free- Agway makes Hearty Hen. That's one...