Since it seems like many folks here are fond of Pet Silk products, I figure that this is the place to go to get PS questions answered.

What is the difference between these Pet Silk finishing products: Liquid Silk, Silk Sheen, Coat Oil? There is a pretty big price difference, but based on each product's description, I'm having a hard time determining which would be best for my pups.

Also, does anyone here use the PS Midnight Shampoo/Conditioner for their Black and Tans? Does it make a difference? What do you think?

Thanks for any input!