To JC -
I think they are both equally good. I know that is sort of the easy way out, but both are such wonderful golf holes.
Each green is built into the sadle of two dunes, one on each side. Each green is very interesting with a lot of slope and countour. The green at Sand Hills is much more elevated.
The big difference between to two is the drive and the second shot. At Kingsley, you have basically three options off the tee; take the low road on the left, take the high road atop the hill on the right, or challenge the center line bunkers and blow it over the top. Obviously, the last options has the most risk, but also offers the most reward. Flying the bunkers allows you to catch the downslope on the other side, giving you a shot at the green in two. I think the first at Kingsley is more of a risk/reward type hole. The second shot is a pretty simple layup, unless you have taken the low road on the left, which offers a weird angle.
The drive at Sand Hills is sweet. It is a forced carry over a ravine and prairie grass. The further left you go, the more carry you have and the easier the angle for the second shot becomes. The safter you play it, out to the right, the less you need to carry, but now the hole is longer and the angle for the second shot is much more difficult, and somewhat blind. I am not sure if you get the drive far enough left you can get home in two anyway. I could be wrong. My group was there 2 days for 3 rounds and everyone just sort of banged it center or right center. No one even tried to get home in two. It just seemed there wasn't a lot of reward taking the ball down the extreme left side. At Kingsley, everyone in my group was challenging the bunkers in the center.