I love Curl Junkie Curl Rehab. Yes, it's expensive but my hair loves it!
If your hair is fine, you might want to find one that doesn't have a lot of oils.
Medium texture, normal porosity, normal elasticity, very weak waves.
shampoo: Redken Fresh Curls
rinse out: CJ CR, TN
jellies: UFD's CM, KCCC
gels: CJ CQ, BRHG