One problem with most of the comments here that are claiming one is better than the other is that the "quality" of search results is still a very subjective term. I wish just like DxOMark Score for mobile cameras, there is a Search result quality index that makes us take more informative decisions (not sure how feasible is that though).

P.S. - I realize even DxOMark scores and ranks may be disputed, but that's still one (close to objective) index and it's used just as an example here.