DDG is great - have been using it for months and I really enjoy the results. Google searches seem to be more of an echo chamber whereas DDG results seem to be more representative across a broad spectrum of sites.
they really have been upping their game and continue to do so. the other day, I was looking for a specific paper, not so old, from 2012. admittedly, for papers, I still use Google, I guess because of the link to G scholar.
I couldn't find it within about 5mins and switched to DDG. it was on p.1 of DDG. that was really great to see.