I tend to find DDG to be comparable for most day-to-day searches. "Electricians in <home town>" or "Restaurants near <sports arena>" work great and is where they'd want to focus to attract market share. I have no problems with it being the default on my phone because of this.

Where I run into trouble is on anything technical. Trying to find research or technical references is a hopeless cause and Google is still my work computer default.