Thank you -- that's the sort of information that's helpful. Now I can seek out those specific shows and see what I think (though, question -- do the Valeyard and the Master count as companions? That seems like an odd system to me.).

Though I should possibly point out that, in my points above, I actually do mention that I don't think that I (or the show) think Rose is the most special person who ever lived, just that the Doctor held her as incredibly dear and special to himself. I mean, Rose Tyler is gone and yet the Doctor and his companion Martha still saved the world.