THe newer version of Exped mats have a pump in the side baffle, and require CPR to inflate. The Q Core is inflatable by mouth or by a pump, such as the Instaflator or a small battery operated portable (the name escapes me, but I ran across one recently). I always just blow mine up.

My review of the Q Core: http://tinyurl.com/ch2jv84

I have had 20+ nights on the Q Core, some below freezing. I would rely on it to be warm to the rating of 15F. I sleep with a quilt so am directly on the mattress at night.

I also have an Exped Downmat 9, rated to -39F (the subzero rating is as per the labeling) and total, complete overkill for most environments, and I only take it in winter. It is equal to the Q Core in comfort and a full three pounds you don't need to carry until you're talking snow, subzero and pulks.

I also have an original NeoAir, which is going on 5 years of use, that has never leaked, and nearly as comfortable but not as cushy or as warm.