I only can say that Pimsleur's texts are idiotic from natives' point of view, and they don't sound natural at all. Well, maybe it helps with pronunciation, I don't know.
I think that the best way of learning a language is watching movies having Russian text of heroes' lines, but it seems like no one feels enthusiastic about this method... Well, it's the best method for me. I never thought all that language-learning soft is useful. It's like soy instead of meat.

Of course, before watching movies and so on, you need learn some grammar anyway.