I tried DuckDuckGo and was instantly turned off their website due to the terrible results they display. Not to mention that site looks like it was made by a programmer, not a designer i.e. unreadable.
It's a bit of an acquired taste in the UI department, but I got used to it in about a couple of days. As for results, it may be that I'm searching for common/obvious things, but most of what I'm looking for are in at least the first 1-4 result or so.