I tried switching to duckduckgo. It fell short comared to google on everything I gave it. I plan on trying again when I have less on my plate. We all know when that will be.
Conversely, when I use google, I frequently miss !w (search on Wikipedia), !i (search images), !a (amazon) and other "bang" shortcuts.
E.g., in Chrome: Settings > manage search engines > find Wikipedia > change the shortcut to "w."