DDG is really great for easily doing specific types of search, eg. adding "!w" to your query will search for something on Wikipedia. For that feature, it's extremely useful and I don't like to be without it. But its own search results (which I think are actually anonymized Bing search results?) are nowhere as near what google manages by personalizing your search. So I'll often add "!g" to my query to get google results rather than ddg ones.