I'm a bit slow thanking for favorites, mostly because I spend so much time writing about what comes to mind when looking at any of my pictures. I've had those vacuum tubes since about 1975: I took several of them out of old TVs that people in the neighborhood put out with the trash, and kept them because even when unplugged from a working set, seemed to still have a life of their own. That was less than 40 years ago, and now they are museum pieces.