I just finished a 6 day Sierra trip with this pad and it worked great. I considered getting the standard NeoAir but was a bit concerned with durability and crinkling noise. With the All-Season, for about 4.5 oz more I got improved durability, quiet performance and twice the R value. It's also significantly more comfy than a standard inflatable foam pad. We had mild weather so the R value didn't really get tested, but as others have pointed out, this pad should be about as warm as a standard NeoAir combined with a Z-Rest or similar foam pad. Finally, with all my newer gear, I'm looking for smaller size when possible, and this thing is small enough to easily fit inside my pack. I did not use the included stuff/inflation sack but was happy to see that a patch kit was included.
Thanks for the info Phil & Dean. I'll see if the retailer I purchased it from (not BC as I didn't know about you guys then) will take it back under warranty. The failure may have been due a thin spot that was there since day one. I would buy one again though.
I love the X-Mug but mine has developed a small hole at one of the folds, so now it leaks. (No idea how it happened.) Any suggestions on how to repair it? Nothing seem to stick to the silicone. Or could it still be under warranty? There's no warranty info on the Sea to Summit website.