If there was one place I'd love to come back to on a powder day, it would be Kicking Horse. We skied here as a day trip from Banff, on the Powder Express coach tour - just $99 for a day out including transfers & lift pass - happy days!
Being able to ski trees, cornices & cliffs all in-bounds is incredible. This used to be heli-ski terrain - so you can only imagine how epic the mountain is. There are runs for intermediates, but advanced skiers will have a lot more fun. Areas such as "Stairway to Heaven" will make your adrenaline pump... If you like steeps, the name is very apt!
If you get a chance to go, jump on it before the cat is out the bag and the masses turn up.