Samz, I'll address your question in detail later, as I have considerable experience not only of listening to Devons in my own system (those are partly what started me off on my Tannoy journey), but also how vintage Tannoy speakers compare with their modern counterparts, and how, IMO, the bigger vintage Tannoy speakers compare sonically with smaller examples from the same range, and also with examples from the current Prestige range.
Thank you Marco and also for the subsequent link you sent....I shall spend the evening reading through it, very interesting, thanks again.