Thanks for the recommendation on this one, David. We watched it with friends tonight and everyone liked it a lot. Some parts were tough to watch, but it never felt exploitive. All of the acting was top rate, and Sheridan’s script was tight and compelling.Our library only had the Blu-ray available. It looked great but I couldn't help but wonder how much better all of those snow scenes might look in HDR, so I'll be adding the 4K disc to our collection at some point.