I'm a Golf Digest panelist. My sense is that GD stresses two different areas. The first is the part about getting the ball around the course, with shot values, difficulty, and hole variety being the criteria there. The other broad category is the experience of playing, with memorability, ambiance, esthetics, and conditioning being evaluated. As Andy indicated, "fun" per se is not evaluated, nor is "quirk" or my desire to play the course over and over again. These are important to me as a player evaluating my own experience of playing a course, but I'm not sure that the GD system really captures those elements. Golf Magazine's system would, as I believe the raters simply give each course one overall score, and the raters could incorporate any factors he finds appropriate that relate to the course.