Tony,
Yes I have played Teignmouth.
The views are wonderful as it sits on high ground looking down on Teignmouth and the the river below. I remember it as very enjoyable but I didnt realise the club were claiming to have some of Dr Mac's best holes? Other than the wonders of this website and some books, my only experience of his work is Cavendish, and I dont think Teignmouth comes close to some of the holes up there. Having said that the par 3s are fun, 11 is a good challenge over a quarry, and 15, 16, 17 was a good run of holes (tough long 4, short 3 then driveable 4). I expect these aren't even close to some of his holes at Cypress Point, Royal Melbourne or Crytal Downs, but what do I know...
Of those you have mentioned, Yelverton looks interesting. I seem to recall Mark Rowlinson posting it as one of a series of aerials about a year ago?
Cheers,
James