Ten watts is nothing to write home about. Won't even make an audible difference.
The difference between the two Audyssey versions might be, but I don’t know enough about them to tell you anything. You should be able to find that info on the internet.
Regarding the video, not a lot of people use video multi-room features (at least judging from the questions we see here and at other forums. Multi-room audio yes, but video, no. But if you have a use for that feature, the by all means get it. And yes, you’ll have to run wiring to the secondary room(s) for multi-room audio or video.
Regards,
Wayne A. Pflughaupt