Personally Canvas is terrible. I'm using it for multiple courses right now, and it is a mess. The students are semi ok with it, but the profs might be better off smashing it with a hammer and setting it on fire. They have no idea how to use the thing, let alone grade or comment on a project. I know it's the prof's fault, but after a year of the same issues they all have time and time again, its Canvas. Oh, also the damn thing won't work the same between Mac and PC, and god forbid you have linux or use any kind of add-blocking. Jesus, the whole corporate education software market is just total crap.