I realize I didn't put my info after I made the poll.

I went with Wipperman. At first I thought it was a bit noisy but that has since toned down. It shifts fine. However, it has developed one, and maybe a two, stiff links in the middle on links never touched. They come and go and are hard to find. I've already tried laterally flexing one of them a couple times and that fixes it for a little while but it returns.

Since I've heard the narrower 5.9 chains run smoother, quieter, and better, I started this poll. I was real interested in Dura-Ace and SRAM users on Campy setups, given how cheap Dura-Ace chains can be. However, I think at this point I'm leaning to the KMC DX10 or spend the extra $20 for the 10XSL. KMC makes Shimano chains anyway I believe.
SRAM (Sachs) chains always performed fantastic for me on my MTB setups. But their issues with design and quality control between the Force brakes and now rear derailleurs are reason for concern.