Old Mac is three winters in the making now and will definately stir the discussion of which is the best course at Bandon Dunes. I have had the privelege to work on phase II of constrcution and live in Bandon for a 10 month span. In my estimation I have played over 70 rounds during that period, with a bias toward Pac, and Trails. As a golfer, working at Bandon Dunes has got to be the best job in the business!
As for the best Renaissance par 5, what about 15 at Pac, this is one of the best strategy par 5's I have seen at any golf course. 17 will will prove itself in less than 1 season as I'm sure many will rave, however OM is quite special for its 4 1/2 par holes : 4,10,11,16!!!
I have felt great freedom while walking those links without a yardage, without a par, and without a care in the world. It wont matter anyway if the wind is blowing....