Another option is the Exped Synmat UL7 LW or the Downmat UL7LW. Both are 26" wide, 77.5" long and 2.8" thick.

The synmat UL7 LW is 21.1 oz, 3.1R, rated to 25 degrees F
The downmat UL7 LW is 26.5 oz, 5.9R, rated to -11 degrees F

I have the Synmat UL7 LW and like it very much. Exped also makes a Schnozzle Pump Bag that you can easily use to air up either mat. The bag is large enough to use as drybag style pack liner and weighs in at about 3 ounces. If you get the synmat, you have to buy the pump bag separately. If you buy the downmat, the pump bag is included with it.

Compared to the neo air xlites, the synmat doesn't sound like a bag of potato chips when you are trying to sleep on it.