I have one of each, cotton coat and silky coat!
This is what use: For the cotton coat- I use Plush puppy shampoo and conditioner. Then when combing out her coat, I spray her lightly with seabreeze oil also made by Plush puppy. It makes her coat shine and keeps it from drying out. I use a very small amount daily when I comb her out.
For the silky coat: I use Chris Christensen Shampoo and conditioner, then when combing her out, I spray on crown royal grooming spray. I use the grooming spray every morning when I comb her out. Keeps her coat from drying out and keeps her soft and shiney
This is what works for me, hope it helps