I see some good suggestions, We'd really appriciate it if you make the
2 suggestions:
 - Option that if a HD video also has option for High Quality.
 - Always play HD video when avaible.

Arguments:
 - Not all computers and connection can handle HD, most of them can
handle High Quality
 - Quite logical if there's also an option for "Always play in High
Quality if avaible".

Hope You can work something out with this. :D