Okay; I now have my eye on Thermarest's Prolite Plus pad for our trip to Utah. It's supposed to be warm, easy to pack, and comfortable.

One thing that confuses me though, Irulan. REI lists mosts Thermarest pads, including the one you mentioned (which they call Luxury Map) as open cell. Certain pads list warmth as a feature, even though they're open cell pads. Am I not understanding something? Thermarest's own website does not list open or closed cell in their own specs--unless I'm just not reading their specs correctly. In any event, I can get the Prolite Plus pad for a good price at a couple of different places.