If you did not need to use local telephone line in heavy rain typhoon lightening and electricity site check period you can choose HKBN.
That's the comments from those people in public estate.
Since HKBN uses Voice over IP if there is no electricity you cannot use any telephone line (their 2950 shares your electricity of your building).
During bad weather since HKBN uses wireless connection the speed is highly suffered. Even BB could only get 2-3kb only how could your Voice over IP still get 9.6k?
For these "GREAT" issue Microsoft dropped XBOX promotion on HKBN finally.