Now, don't give me that "audio equipment should have no sound at all, it should be merely faithful to the source." And none of your "it depends on how well the design principles are implemented." Assume it's a forced choice: you have to choose one or the other, and no arguments or requests for clarification.
If you don't like having to make such a choice, or if your answer is "it depends on the mood I'm in. . .sometimes I like a tube sound, and at other times I like more of a solid-state sound" then you have some kindred…