I've had more CRKs than any other high-end production/mid-tech/full custom and they have been better than anything else I've owned. It's hard to give absolute answers (for me anyways), as it will be very unlikely I'll ever own as many custom Southards(for example) as CRKs, but the Southard custom I owned was not as well made as any of the CRKs I owned. I can say the same for the Wilkins custom I owned as well. They were more exclusive and more pricey, but not as well made. There were obvious flaws you could see as soon as you picked them up(stripped screws, clip sitting proud, blade spine uneven to name a few flaws I saw on mine). The Hinderers I owned also had little flaws(uneven jimping, G10 scales not sitting perfectly flush). None of these issues were big, but when comparing to the Sebenzas/Umnumzaans I've owned, they were there. I have found my Techno to be the closest knife to any of my CRKs in terms of F&F, but I've only owned one, so it's hard to say they are all like that. I'm not knocking other knives I've owned, just citing my personal experiences.
When I look at other knives besides CRKs, I'm looking for something different, not better.
Edit: I should add I feel there are a number of knives that are on the same page as CRKs, just not better in terms of F&F(Lionsteel, Hinderer, Strider).