When I think of search I pretty much think of Google. I have tried Bing, and while it is pretty, a lot of my searches just don't turn out as well as they do on Google. If you'd like to try something completely different, let me suggest you get a look at Izik, which is free. Izik is not a front end for Google or any other search engine, but it has its own search technology and methodology from Blekko, the company that created the Izik app.
The searches are very visual, yet powerful. I was getting very good results from some obscure searches. Search results get nicely divided into categories that appear at the bottom of the screen, and those