Even better than my Big Agnes pad
As many have written before, Thermarest really nailed it with this new model of the NeoAir.
I had a Big Agnes air pad prior to springing for the Trekker, and this pad is all about the horizontal air ballasts. My BA pad had vertical air chambers, and the horizontal ones conform to your back more easily. I used my trekker for the first time last weekend on top of a car camping cot, so I was extra spoiled, but I'm looking forward to see how much more comfy it is on the ground.
A friend of my BF owned the previous model of the NeoAir, and said it sounded like a "bag of potato chips" and didn't seem very durable. The Trekker is quiet and seems tough. Only downside is that it is not insulated, but I've heard Thermarest is coming out with the silver coating insulation. My BF got the 3/4 length 25" Trekker, and he loves the extra width.
So far, no regrets here. Way to go, Thermarest.