Replying to What Pow Skis to get

In the market for new powder skis and not sure what to get. I'm looking for something that has excellent float and is maneuverable. I will not be using them in the park or on groomers, so they should be solely powder skis. They'll be used for backcountry, cliffs, etc. My top choices right now are the K2 cowabunga 2017, Armada JJ 2.0, Faction candide 4.0, and the Atomic Backland Bent Chetler, but any insight is greatly appreciated. Also, should powder skis be the same length as park? I am an expert skier and ski patrol in north lake tahoe this winter if that's useful. Im 5'10'' and 165 pounds.