I’ve had both, the Hope is in the bin, the CK is still on the bike(three different frames) nearly ten years on and super smooth, with one grease up about two years ago. The Hope lasted almost two years, at £60 as opposed to the £100 King – which is still good after almost ten years, it doesn’t represent particularly good value, or prudence to get the Hope.
I wouldn’t ever buy a Hope headset again, the new ones are a bad design too, I had one of those as well, a standard FSA type set up but with lots of seals, EXTERNAL vulnerable seals which won’t last like a King. The bearing showed signs of spinning in the cup as well, if you follow Hope’s guidlines of packing all the contact and other surfaces with grease. Which is the only way they can attempt to waterproof it. When I took it apart after a couple of winter rides to service the fork, the headset had water between all the components, and there are quite a few in the Hope, this is when I noticed the evidence of the bearing race spinning in the ali cup – yes it was fitted correctly. I have a King on that bike now, second hand and of course it’s faultless – fit and forget.
I wish I could say otherwise, and be patriotic, but they are sh!te from my experience.