Very interested in this thread as I narrowed things down for myself to either Arden, Cheviot, or Turnberry. Curiously, almost all members here and in other forums who were devotees of Tannoy and therefore seem to know what they are saying mentioned that Turnberry is one of least successful Tannoy designs despite being a junior 'Prestige' member, while there is generally universal admiration towards both Cheviots and Ardens.
I did not hear any of these speakers in their current iteration, but listened to the older Cheviots which I really liked, and once heard old Ardens, very briefly and in less than optimal circumstances. Again, I remember its sound well enough for them to make my shortlist many years after! I am less concerned about the size of the room here, in part because it really comes into play at certain (loud) volume...
Curious to hear about Turnberry - how they compare... Thanks.