thanks for the imput. How do the NeoAir and the Trek+Travel by Therm-A-Rest differ? Seems like the Trek+Travel model may consist of more foam,since (according to my Campmor catalog) the NeoAir rolls up tighter and is lighter. My trips are usually in May. I wonder if the much pricier pad( NeoAir )provides as much insulation. The 40th anniversaary model is interesting,too.  It seams that the Big Ag is loved by many,but a smaller pack size is pretty attractive. I'll  have to look on line to see what the last suggestion is like.    thanks.