The old question - 'best (hardest?)' vrs 'favourite'
A few suggestions - I like 9-holers
The Channel at Burnham & Berrow - tough track too and as a Buda competitor said last year "every course should have a hole like the short par-3 8th hole"
St Olaf at Cruden Bay - 6th & 8th are terrific, possible the best holes of all 28 at CB
Cruit Island - not just quirk, damn good golf
The Bann at Castlerock - shortish cracker
The 3rd 9, whichever 9 it may be, at Carne
The original 9-holes at Newburgh - so tranquil and with a monster par-5 to finish
St David's City - super scenic
That'll do for now.
Atb