Just my two-cents:
I use Biolage moisturizing shampoo and conditioner on my babies. I have both a cottony-coat boy and silky-coat female and swear by this "human" shampoo. It keeps their coats soft and moisturized and smells great too. I have tried a few doggie-shampoos, but they don't seem to moisturize as well as this one and I get a lot of compliments on both of their coats.
Wow...after re-reading that, it kinda sounded like an infomercial..haha.