I think the best line i ever had was at loveland colorado in there big steep wide open bowl, i dont really know what its called but its all the way to the right if your on the chairlift and when i skied it it was untracked and i remeber feeling like i was in alaska or something, it was that amazing.
But then again i havent had that many powder days in my life so im sure that would be normal for people who get to go skiing alot.