Sometimes I need to jump from DuckDuckGo to Google, but not often.
The nice thing with DuckDuckGo is, it's easy to jump if I need to. If DuckDuckGo search results are unsatisfactory, all I need to do is add !g to the search string and it's a Google search.
Same if I want to search Amazon. Add !a to a DuckDuckGo search and it's an Amazon search.
Add !w and it's a Wikipedia search.
Add !yt and it's a YouTube search.
For that matter, if I want to look something up for World of Warcraft I can use DuckDuckGo and add !wowhead or !wowpedia.