John K.,
For one thing, I'm not exactly sure what internal contour means. Does this mean greens that possess additional ridges, slopes, and contours, beyond the gradual sloping that green uses to fit the land it occupies? Or does it mean contours that do not extend all the way to the green's edges? I'd like to see someone define this.
Without some variation in contour, the greens will have constant slopes, and yield putts with parabolic trajectories all day long. That's boring.
I like variety.
I like putts that barely trickle downhill, and putts I have to really hit hard uphill.
I like putts that are interesting and difficult to read.
I especially like putts that fool me.
Although I agree with Cary that putts that break five times are excessive, I don't think I've ever encountered a putt of that type.
I think I like internal contours. And I agree that it can be overdone in places. I liked the greens at Bandon Trails. Some were pretty simple. #11 is amazingly flat. #5 and #16 are very complex. Good variety, yielding a good variety of putts.
The other JK