Reliability of new 2015 6.7 powerstroke or Cummins Diesel

We have a 2015 F-350, CC, DRW, 4x4, 6.7l. This is my first diesel, first dually, and first Ford; so, I don't really have anything to compare it to. It is a dream to drive! Whoever made the comment about the engine brake and the cruise control was spot-on. I turn on the tow/haul mode and set the cruise control at whatever the speed limit is (unless it's over 75) and go. She just goes without complaint over any grade. Over 70k on the odometer with 0 time in the shop other than basic maintenance. Love it!