With the Snowden revelations and the abundantly clear trend of Google to aggregate as much personally-identifiable information as possible, I made a clean break in June, 2013. The performance and search quality are vastly improved. And while I don't eschew all Google products (though I'm making drastically less use of them, and as little as possible while authenticated), I find that using DDG as my first cut generally works.
For fallback, my usual scheme is DDG, !SP (StartPage, another proxying search aggregator making more full use of Google), and if I'm still not fully satisfied, Google itself.
There are areas in which Google's search tools are still hugely superior:
⚫ Searching within a date range. DDG doesn't offer this option.
⚫ Some specialized search, in particular Google Books and Google Scholar. Where Google focuses on its core competency of providing search and not on grabbing as much user data as possible, I find the company far more acceptable.
⚫ Some deep-site searches. Google seems to crawl sites more deeply and in more detail than DDG. I particularly rely on it for Reddit, whose own site search excludes comments.
As I've noted, Google's biggest liability is that, no matter its best intentions, it cannot provide any guarantee against a government-size advanced persistent threat, especially not one with the law (constitutional or otherwise) at its disposal: http://www.reddit.com/r/dredmorbius/comments/1u356d/schmidt_...
But overall, I'm hugely impressed with DDG.
For those who use console / terminal browsers such as w3m or links, the 'lite' version puts the "search" button one tab following the search dialog: https://duckduckgo.com/lite
And DDG's TTY mode (command-line interface) is teh awesomenessedness: