Many people like the V05 and Suave Naturals line - very cheap. A little higher priced than that but cheaper than Deva would be Aubrey Organics honeysuckle rose, and Yes to Carrots.
My hair only likes CJ and JessiCurl - I've tried all the drugstore brands and Deva stuff.
Just keep in mind that if you find the drugstore stuff works well but you have to wash more frequently, then it may not be costing you any more overall to use the Deva line.
remember, with all advice or suggestions for your hair, YMMV!!
2b wavy, medium texture, low porosity, med-high density. Protein finicky.
Cleansing: DCNP, every 4-5 days (occasionally use CJ cleansers).
RO: CJSC, occasionally use JCDC
LI: KCKT or CJSL
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.