http://www.digitalhomecanada.com/
The forums have lots of opinions on the Canadian HD providers.
I've read that about Shaw too. I don't have a HD set yet, but need a TV provider and can't decide to go to Shaw short term and then Bell or Starchoice when I get an HD set, or just go with whom I want to start off.. I'm leaning towards Starchoice at this point.