A coworker uses DDG and each time we are talking about a problem at work (software development) and need to search something, I am disappointed by the lack of good results and make him use Google instead. It is currently 5 - 0 for Google if I recall correctly.
I would switch in a heartbeat if the results were comparable. Every time I’ve given it (or Bing) a shot for a few weeks, Google was simply better.