Merion West. Not only is it a helluva golf course, it's a relaxed and more casual atmosphere. The type of place that's perfect for that late day outing where you race the sun to the 18th green, laughing and having a blast all the way. Some pretty wonderful architecture there too!
-------------
Conversely, Stonewall's new course gets very little play. I always see gofers on the original course, but very rarely on the new. The parking lot is often empty.
Strange, because it's really a beautiful place.