I think CK stuff is a bit more bling than function.
I agree. There are enough high quality headsets out there that are way more cost effective than a CK one. As it was written above, you can buy two solid ones with a serious amount of change left over compared with a single CK. However, the CK headsets do look good. An out of town buddy of mine came over for the first time who also happens to be a mountain biker. I was showing him my bike and the first thing he noticed were my CK headset and hubs.
Damn, I look good sometimes.