I find it expensive for what it is (given that I still get a limited number of searches) and I'm not comfortable with some of their ways (I don't want anything to do with AI, and I the idea they have of being nonpolitical seems dangerously naive to me). I also don't like supporting non-FOSS projects all that much.
Still, it's the best search I've found, and I'm paying every month until I find something better. It's worth it.