A very fine job you have done there adhoc. It is very nice to see some recent attention to the 6SN7. As your research shows, most was thought and written a couple of years ago.
I think one of the best sides of your compilation of 6SN7 views and impressions, is that it is easy to compare peoples views. IME, views need to be related to what music and equipment people are listening to and it is always a healthy advice to read what several persons have written. And then in the end, it is of course a matter of taste, too.
