And the Big Agnes setup look tempting! I'm also considering switching to the Air Core mat as well- glad to hear that others are happy with it.  I'm willing to pack a bit more for comfort, but my luxury thermarest weighs a ton and takes up too much space- one area I'd like to downsize- might help get my partner and I down to 1 trip each across the portage!  (I can dream, can't I??)

waterlily