I don't think Brett grasps the subtleties of Holmes at all; he plays him accurately if one looks only at the surface of the stories, but there is a lot under the surface and it matters immensely. I don't, for example, ever get the genuine fondness Holmes clearly felt for Watson from Brett's performances, nor do I think he understands Holmes' sense of humor at all. Of course, I'm sure there are people who would disagree with my understanding of Holmes, and I can't necessarily prove them wrong, not being Conan Doyle. ;)

I haven't seen Douglas Wilmer, but a knowing twinkle is a good thing, so I hope I come across some.