I've been using Kagi for the last year+.
Personally, I wish they'd tone down the AI stuff that ruined Google, but at least you can turn most of it off.
Their results are okay, a little better than Bing, but obviously they're limited by their existing index providers, I wish they'd run their own spiders and crawl for their own data, since I think Bing fails on a lot of coverage of obscure websites.
In general I find the weighting of modern indexes to be subpar, though the SEO industry has made it a hard problem to tackle, I wish more small websites and forums were higher ranked, and AI slop significantly de rated.
TW: Self harm
Also not a huge fan of the company and a lot of it's ardent customers, who heavily protested a suicide prevention popup if you used it to searched for how to kill yourself.