As a 1st year resident, which book do people recommend as being better for the boards? I'm not crazy about either one, but some of my attendings are telling me to read one book, while some recommend the other one, leading me to pull my hair out...

I'm looking for a Rusch stylet that apparently went out of production some years back. Everyone raves about them, so I definitely would like one. Anyone have one for sale, or know of someone selling one?