I have been contemplating the Downmat TT 9 as well for a few reasons: * Edge to edge insulation as far as I can tell * No thicker "rail" edges, so a pair should mate nicely * Should be quite warm * Tried an XLite and didn't like it, XTherm Max is compelling but I prefer long baffles on an inflatable * Maybe less prone to baffle failure? Am thinking now about just layering up enough CCF to have R5.0+ in the winter. Leaky pads really annoy me, and any inflatable seems problem-prone. Comfort-wise my favorite pad is the Prolite Plus but it is not available in a large 25×77 rectangular format. There is the Nemo Tuo but it is heavy. XTherm has a ton of good reviews and is very light…