How is O'Bannon Creek? That was one place in the 'Nati that I didn't play when I lived there.
(Standard disclaimer applies: I'm just a golfer and not an expert (or even a novice really) on architecture.)
O'Bannon is a solid golf course. It isn't going to bowl you over with spectacular holes but is it a good all around course. The par threes are probably the strength of the course. There are a lot of holes where you pick your strategy off the tee -- not every par 4 (or even par 5 depending on how you want to play) is an automatic driver. The course is always in great shape. The greens are typically a medium speed and well maintained. It's a very easy course to walk with really only one longish (100 yard) walk to the next tee and two hills of any consequence. A few of the holes (2, 3, 5, 8, 9, 10, 11, 13, and 14) provide a big course knowledge advantage. That is probably the biggest drawback of the course.
IMO, considering price, quality, facilities, etc. O'Bannon is probably one of the best private clubs in town.