Nicholas,
When our company first came up with the idea of creating walk-through video tours per floor plan specific, we knew right away the best video player to use would be Youtube. Reason being, everyone can get on the website and you dont need to download like WMP or Quicktime to be able to watch the video.
Also, Youtube is mobile friendly. So when a future tenant is looking for a place and drive up to a community where no one is available because they are on a showing, the prospect could scan a qr code that takes them to youtube to watch the video on their phone.
This is how we use Youtube -
Hope this is the feedback you were looking for.
Nofel Molai