That is a good board, I honestly wouldn't worry about an FX chipset vs the X. The difference is better performance from running dual video cards in Crossfire/SLi. Generally a single, stronger video card is a better solution than 2 lesser cards in crossfire/sli anyway.
Eh, the 6870 isn't a bad video card, in fact is a great card for its price, but its not really the best if you're shooting for 1080p gaming, I'd use it for awhile til you can buy a single, stronger card (under the logic I just presented on dual cards). Single video card setups tend to have less problems, and use less electricity. I'd shoot for something like a 7870 or a GTX 660 TI in the future.
Asrock has some decent motherboards, but they seem to be priced much higher in Canada than the US.. My suspicion is that Asrock doesn't have as good of a distribution market in Canada, so the added cost is all in shipping to merchants like newegg.