On the PCT I started with a thermarest prolite 3 combined with a 3/8" ccf pad underneath to keep pokey things from causing unhappiness. I had ordered the Montbell pad system and switched to that along the way --- U.L. pad 90 inflatable combined with their (inflatable) pillow that toggles to it.

Switched to a size regular original type Neo-Air for trips after that, combined at different times with 1/8" and at times 1/4" gossamer gear thinlight ccf pads.

The evolution of pads continues. My prolite 3 was a 'short' at 47" long and weighed 13.6 oz in a light carry sack. Size regular neo-air weighs 15.1 oz (in the same carry sack), but is 72" long and much thicker.

It does require considerably more air to inflate!

Once in a while I miss being able to toggle the pillow to the montbell inflatable pad, but not enough to step back from the neo-air benefits.