So far I know the available brands in Ontario.
Valrhona - 70% guanaja $74/3kg, 55% equatoriale $59/3kg, 40% jivara $67/3kg and 35% ivoire 75/3kg
Callebaut (callets) - bittersweet $122/10kg, semi sweet $117/10kg, milk $125/10kg, white $118/10kg
Currently I use valrhona and callebaut. I'm not a fan of Lindt and Guittard and I haven't tried cacao Barry ... I want to see if i can find a better affordable chocolate over valrhona because I like the milk and white chocolate over other brands so far but it pricey :P