My hairstylist uses some Redken...
She recommended the All Soft. (but, it can be expensive!)
Right now I am using the Tresseme Smooth and Silky.
It is cheep, and I haven't been tempted to try any other more expensive brands!!! (I did try the Tresseme thermal recovery conditioner... it is not good) I can recommend the Tresseme in the Smooth and Silky.
I have also used the Biolage hydrating shampoo and the Detangline Rinse as a conditioner... It is good... no gunky buildup!
I wish I could find something that moisturizes and softens without the greasy residue and buildup. but... alas...
I have thick, course, wavy, sometimes frizzy, hair.
I can't use anything that is 'heavy'.
The Nexxus leaves so much grease and silicon in my hair, it is like the one other poster said... It was 'gross'!!!
