RM is very powerful and simple. Those who like such frags should choose it. B*Men is more complex and "avant garde." It would be better suited to those think in terms of "fragrance art" or some such notion. RM is far too crude for me, and if I tried one spray to the chest now it would probably make me sick. I enjoy B*Men but must be in the mood for it, because it has some "rough edges," which of course one would expect from a frag that seems to have been designed to be "avant garde." Obviously, most people will prefer whatever they conceive of as pleasant or impactful, and because you haven't given us more information there's not much more I can think of to say about it.