Have you tried Coat Handler Conditioner? it dilutes 15 to 1, I keep some in a spray bottle. It really moisturizes the coat and detangles really easily, and it smells wonderful. It's a leave in conditioner, so keeping it in a spray bottle is really handy.
I use the shampoo and conditioner on my crested, his coat feels like silk, and boy does he ever smell lovely. His coat has never looked better, my favorite shampoo and leave in conditioner ever. I buy it by the gallon