I can't really help with brands for you - my hair didn't like any drug store products. I think some of the suave naturals are protein free.

But, look through the product review thread and look through responses to other similar posts to yours. You should be able find something to try next. Just remember to find someone with similar hair properties as you - greater chance their hg products will work well for you, too. Until you figure out your hair's protein needs, you might want to avoid them all -- look into what exactly protein is...the ingredient list doesn't always say "protein".

Good luck!
remember, with all advice or suggestions for your hair, YMMV!!
My hair:
2b wavy, medium texture, low porosity, med-high density. Protein finicky.
My routine:
Cleansing: DCNP, every 4-5 days (occasionally use CJ cleansers).
RO: CJSC, occasionally use JCDC
Gel: KCCC, CJCIAB for 2nd day hair (sometimes third)

Heat is my friend: warm water rinses, steam caps, and diffuse dry. I love CLU cloths and my Denman.