I use Bing. Partly because it’s the only real option if you want to search from the windows start menu. But also because I do like how it presents info a bit better, and also like its knowledge graph a little better than the one Google has.

That being said, the engine does have a lot of issues with relevancy. And its image search is almost unusable. So I often find myself needing to go to. Other than that, I’m fine with changing it to my default across everything I own. I just wish MS would fix its most blatant issues instead of bullying old people into using it.