I never had any significant problems with Max. Their channels seem to be a little more compressed than Shaw's digital channels, so the picture can look a bit more "blocky" when there is lots of motion. All Max channels are digital, unlike Shaw's.
Each system has a few channels that the other doesn't and they package them differently, so the prices will depend on which channels you want.
Max is a good value. You don't have to buy a terminal and I liked their program guide better.
I left Saskatoon about 18 months ago, but I don't think much has changed.