I can't take credit for this, it's the Official Shimano recommendation...
Come on, Sheldon, you ain't fooling me on that one! I looked at your website, and how shall I say it, there was, um, a lot of very, very good advice and information on just about everything there is to do with bikes. Yours are not the ramblings of a theorist, you know that, I know that, so darned well take the credit!