From what I’ve read on here the people that use them like them. If you value your privacy enough to pay for a search engine you’ll probably like it. I believe I’ve seen Kagi mentioned the most

I liked Kagi enough to use it as my default search engine back when I was regularly employed and could justify ten+ bucks a month for a boutique search engine. I don’t know how they plan to survive though, given that they use Google’s indices extensively. Google isn’t exactly going to let another company eat its lunch.