@nprofile1q... DDG is good, but they still use contextual ads powered through Microsoft. There was that controversy in the past where it was found that DDG had some ad-related agreements with Microsoft that were not disclosed. Still far better, IMHO, than Google and Bing.
No ads in Kagi.
Kagi allows me to down-rank results on my own terms. I don't want Reddit results or Pinterest results. I don't want NY Post or WSJ articles, etc. They filter out AI slop if you ask for it. I can rank certain sources as more desirable than others to control what is higher in the results.
They have many extras. They have a private AI which has been useful. They have a private translation service. Many tuning options.
They have their own spider, although they do supplement if necessary. I believe DDG uses Bing. If Bing falls victim to SEO Spam or they decide to manipulate results, that spam and those biases could inadvertently filter into the DDG results.
The bottom line is that it shows me exactly what I want when I search and isn't open as much to manipulation. I think it's worth paying for.