Let me be the first to throw a bit of cold water on the notion of Machrihanish's 1st as being a great golf hole, or among the best opening holes in golf.
Granted:
-- The setting is incomparable, with the ocean off to the left and pure dunesland links off on the horizon. The sense of anticipation on the tee is terrific.
-- The strategy of the tee shot itself is quite good (although hardly unique) -- bite off as much as you choose. The four pot bunkers lined up on the far side of the fairway, on the line of a well-struck safe shot, add to the strategic challenge of the tee shot.
-- The nature of the "Cape" tee shot is rewarded, because the bolder tee shot -- both in distance and the willingness to hug the left side of the fairway -- is rewarded with the better approach shot than the safer shot that chews off less and stays away from the beach.
-- The beach runs alongside the entire length of the hole, adding some level of discomfort to the second shot.
However:
-- The green, oddly to me, is angled away from the beach. A true Cape hole, which the 1st resembles, would have a green perched much closer to the danger of the beach and water beyond. Instead, the 1st green is set away from the beach.
-- The land the hole traverses is (relatively) tame, compared to the rollicking fairways that follow, especially on Machrihanish's front nine. The safe player, opting for a tee shot away from the ocean and beach, is left with a longer shot, yes, but one over fairly routine terrain and a green that's both open and receptive. True, an approach from the left side of the fairway is better, but an approach from the right side isn't strewn with too much danger.
-- The green is quite tame, again compared to what's to follow at Machrinanish. It's a relatively flat affair, with none of the dramatic contouring seen on several of the course's other greens. Both the terrain of the hole, and the green, are out of character with what's to follow.
Machrihanish is well-known for its front nine, generally viewed as the better of the two nines. It features eight par 4s among the first nine holes, including the 1st. I'd put the 1st -- maybe -- in the top five of those eight par 4s on the front nine.
Or, to put it another way (and to crib from the recent "three-hole stretch" thread), I wouldn't put the 1st in any of my top-tier three-hole stretches at Machrihanish. The 1st is a very good hole, and a terrific setting. But great or best to me implies nearly flawless, and I'm not sure the 1st lives up to that standard.