Totally agree with climbhigher I have a headset that came off a Pro DH bike spent the season racing the worlds and nationals 8 years ago and is still with me after being on 4 different bikes. It's no wonder they cost so much you'll never need another one unless you sell your bike with it. Great color selection also.
A King headset looks the best, performs the best, and lasts the longest of anything out there. The new sotto voce branding make these look like works of art.
There is not one negative thing to say about these. After you've realized that a King headset is going to outlast your current bike and probably your next bike as well, you feel totally fine with whatever price you paid for it.