I have the opportunity to go with my children ages (12 and 10 - snowboarders) to either Laax or Obergurgl this coming Dec. 2014. My wife and I ski. I have never been to either place and wonder if anyone has gone to both and which one would you recommend. The hotels where we can stay are: The Cyrstal in Obergurgl and Signina Hotel in Laax. Thanks.