Here in the NYC area, Verizon offers FiOS fiber optic straight to the house. How far will Bell Canada go with the fiber optic? Cable here in the US use fiber optic but only from the transmission place to major nodes and then use regular cable wire to the house. Therefore, the signal quality is reduced especially for HD. Also, will you be able to get internet service with Bell Canada's fiber optic network? If Bell Canada goes to the house with fiber optic, go with it and take the internet service as well if offered! The HD quality won't be reduced. You'll find that the speeds are much more faster even during "peak" hours. For a good example of HD over fiber optic to the house, take a look at any of IceMan's clips or caps.
FYI... I have Verizon FiOS only for internet and phone. I have DirecTV for HDTV. I choose DirecTV for HDTV since I had them for a long time and they had always been good to me.