Big White vs. Sun Peaks

I am hoping to plan a week long trip to BC in March. The plan is to fly into Kelowna or Kamloops and ski 3 days in Revelstoke and 3 days at either Big White or Sun Peaks. I am a 45 year old intermediate skier with plenty of experience on groomed conditions, particularly Whistler but due to the crowds and just luck don't have a lot of powder experience. Hoping to experience the champagne powder of the interior I have heard so much about. Night life is not a major concern but any opinions on the skiing, restaurants, crowds etc. would be much appreciated.