Been using Kagi for about 18 months, and IMO well worth it. It does what is says on the tin, it's a search. You use it, it provides good results, and you're done. No fighting with ads, no making you automatically skipping the first few results because you know from experience they are promoted. You control what experience you want with specific domains. Privacy pass means you don't even have to be logged in.

One gripe would be trying to use other features while using privacy pass. Eg, maps doesn't seem to work. They are regularly improving the experience though. And that's a key difference. Google is getting worse for their ad revenue, Kagi is getting better for paying customers.