I really never had issues with Shea Moisture. I have tried every masque. My fave is the black soap purification mask. I used to pre poo with them. I now use oil treatments before shampooing.

SM is great but you may have to give it another shot before you see the desired results. It is a treatment after all. The results will be gradual.
These are my curlfessions
About my hair:
weekly shampoo-HE Honey I'm Strong
daily conditioner-HE Honey I'm Strong (use as li)
go to style-Pocahontas braids