The Downmat 7 and 9 are warmer than the XTherm. I have all 3. But the XTherm is the way to go for backpacking, as it's significantly lighter and more compact. The Downmats come out when I'm truck hunting, or sleeping within a few miles of the road, though.
Assuming you were packing the gear in on a mule,which would you chose. I am no longer capable of packing those big heavy loads so for next year ,I am looking to convert to all ultra light back packing gear, but put it on one of my mules
