I like the Tannoys too, the DC8T is my favorite, extremely natural and realistic tone. I owned Snappers and the 300BSEPPs. The Snappers were a lot of fun, very refined and powerful tube amps, modern clear sound, very quiet and very powerful bass for a tube amp. Most el34 tubes are not up to the Snappers potential. 300SEPP a bit less impressive due to the output transformer's ultimate performance being compromised to allow both SE and PP topology, but 20W of 300B is nice with the right speaker. The 300B preamp sounds awesome too. I'm sure that you are very happy with your fine system.
Rich