Whitewater has pretty good snow but it is a bit of a stretch to say best in Canada. I spent a season there and had a great time though, fun little resort. Unless you ski tour it isn't exactly a destination location, the inbounds terrain is just too limited. That being said if you do ski tour the place is awesome. Sooo much great terrain within a short half-day trip. Evening ridge, ymir, hummingbird, trash chutes, westies, 5 mile, white queen, black queen, the list could go on forever of all the great backcountry spots.