It's only good enough when you're in the US, I live in the UK and DDG consistently returns non local results even though the country is set correctly, it's especially annoying given how many US cities are named after their UK counterpart.
Having to append 'uk' to 90% of searches after the first results page is full of useless American shit, for search terms that Google UK handles flawlessly, gets old, very quick.
On top of that I live in a small city that shares a name with a larger city. Google understands this and gives me results for my local, smaller city, but DDG needs to be explicitly told city name, state name.
For daily use, it's fine, but it's awful for local results or anything that requires a map or directions.
But..
Even though I have the Australia button turned on, it doesn’t seem to do anything. So every time I need something local, I add “site:.au” to the end of the query then it works great again.
Sometimes I want results from StackOverflow, in English. On Google getting this right was a PITA.