From experience with many options, and having used zoom for over a year now: Video quality is better, audio quality is better, video and audio are streamed separately and during low bandwidth situations audio takes priority over video (video starts lagging but audio remains as perfect as possible), seamless to join meetings even when youre not a 'user' of their ecosystem, and has neat UX like informing you that your microphone is soft-muted when it notices you speaking, etc etc.