Been to Sunshine twice, once by myself and once with two kids aged 10 at the time.
Snow: wonderful snow, not icy like it sometimes is in another very close resort (Lake Louise)
Terrain: it's big enough and it will fulfill all types of skiers, you can create your own tracks in glades
Lifts: not all lifts are fast ones, but with shorter lifts it doesn't matter much.
Kids loved it, as the trip was quite short compared to going to Lake Louise,
Cons: there are not enough places for them to stop and have a hot chocolate or something to eat, so they always had to come back at the same crowded and noisy place!
Parking can be challenging, so you need to go early in the day.
Overall very satisfied with Sunshine.