I tried the therma rest self inflating mats. they were only slightly better than nothing and a pain to packup every morning. I used a Big Agnes air mat for about a year but inflating it by mouth every night was a hassle.
I really like the Exped synmat deluxe and the air mat series. I currently tour with an Exped Airmat 7.5 Deluxe. The deluxe versions have a built in pump, basicly a valve with a foam chamber that allows one to easily pump up the mat. The airmat series do not have any insulation and pack very small.
Jeff