No, I don't use Baidu as it performs poorly for english queries. From what I have read online, the popular sentiment is that Baidu is better than Google when it comes to chinese search queries. Ofcourse, like Google they have the monopoly advantage (atleast in China). Yandex, I do use daily - it's good with queries it knows about, but struggles with new / unknown queries (for e.g. when I search something geographically related or local, at which Google is obviously better because of its userbase).