Not too revive a dead thread for no reason, but there happens to be a big diff between blades for North of the border, and here in mainland US.
For the most part, in Canada, they tend to have a much harder aggregate, and need a softer bonded blade. Also, due to shipping costs, taxes, and tariffs, you end up paying $30-50 more per blade anyway. There are very few economical blades that actually work in Canada.
As far as here, there are GP blades for everything, and then there are Hardscape GP blades that are good for Pavers, concrete, and Stone. Make sure you're getting the right kind of GP blade....