Sean I agree Nefyn is vastly overrated.
Rye is also overrated by everyone, it has 4 of 5 very good par 3s, excellent par 4s in 3,4,6,9,12,15,16 & 18. It's a fun quirky course but not world top 100, too many average holes are glossed over. Even 13 is a straight forward drive to a flat uninteresting fairway, you hit over a dune to a flat uninteresting fairway and green, only the fact it has a big dune in the way makes it different. However there's no feeding the ball off the slopes to get the best result.