Ok I've read and re-read the care and grooming section concerning combing my cats (3 month old shorthairs) and a couple times it's mentioned that metal brushes should not be used. Now aside from the obvious comfort factor are there any other reasons to switch to the comb listed on top of the meow.com site? I like the look and the size of that one and the fact that its plastic and i wont have to worry about poking places on my cats, but my wife is a bit of, well lets just say she's frugle and i'd like to have more to go on when i tell her the walmart brush she bought me isnt going to cut it...