It's interesting, I've used four or five LMS' over my time as a student (Canvas, Blackboard, some k-12 ones, touched Moodle once). Canvas has been the only one I really liked. It works amazingly well at managing coursework, isn't slow, doesn't have a weird paradigm around groups vs courses vs sections. It's not confusing to use either, and they leave a graphiql client there on the hosted version if you want to pull your data yourself (and the API is great). I don't understand why people use Blackboard anymore if they can help it (although maybe it's better now?).