Alex,
As between hole #9 and hole #15, I prefer the latter. It fits my eye better. But I don't find it to be as challenging. Hole 9 requires an extreme drop shot generally directly into a one- or two-club wind, meaning I find myself struggling with club selection. Plus, on hole 9, the green slants severely from the left, meaning that a ball hit too far left runs too far to the right, while a ball hit too far to the right often lands in a bunker with a really difficult recovery. Hole #15 just isn't as challenging -- at least for my game.
For one shotters, I actually prefer hole #3, which plays like a "Redan." I love hitting the right side and watching the ball run to a lower left pin. I also think hole #17 (the last one-shotter) sets up for a strong challenge, if played from the lower tee. If played from the upper tee, its a "drop shot" all over again.