Review (5/5): Not stinky, works fast, looks great, and low price!
My headline pretty much says it all, but I like how fast it is and no odor whatsoever. Covers grey! It does wash out over time if you use hot water when you shampoo -- bad for the hair anyway! -- but so does every other brand. Wash your hair in coolish water and it lasts longer. I'd give it a 10 if that was an option.