Google is number one and it gives most relevant results. But Bing is good for performance point of view. It is little faster than others.
Right now, there is nothing better than Google so you can stick with them. They are the best in indexing good content sites.
I used google everyday and it's my favourite....unless I cannot find something on google (which is very rare), then I'll try my luck with other search engines, like yahoo
Well, they both serve similar purpose from end user point, as a search engines. On the business side, Google is far more advanced and has bigger impact.
Google is the best!!!! no one can beat google..... maybe I can built my own SE company ?? and then beat Google (just dreaming)