The clothing style of neck pillow travel is indicative of how often one is in seat 27B and that the time is in minutes. The first thing that the seasoned travellers learn to know is that comfort is among the survival skills in addition to packing cables and finding good coffee. The right neck pillow arrives as a savior of the red eye flights and trains delayed. Ironically, in this case, human beings are detail-obsessed just as they obsess on details during commercial cleaning work, large sum of money. Even one bad pillow will ruin the whole vacation. One will do you good, and make you save me my neck.

Mem Foam vs. Inflatable: Pick Your Fighter.
The memory fom causes one to recall the warm handshake at home. It molds fast. And it forgives jutting bowing of head. On the planes where the sleeps are in short, weird bursts, very good. The downside? Bulk. The bottle fits in a carry-on like a cat strangled.
Inflatable pillows are lightweight. Very light. Blast them open, blow them open, blow them open. They are appropriate to the people who value space but not luxury. They are stiff another has a complaint. Others love the control. And as in the case of the car seat, so to speak.
How Form is More Than You Can Think.
There is a reason why there are u-shaped pillows. They grasp the neck and they stop that headlong drop which scares strangers. Wraparound designs are expanded to the chin lock designs. Symmetrical shapes are part of the sworn ones by the side sleepers. It sounds odd. It works.
I once witnessed a frequent flyer wrapping a flat pillow in a shape of a croissant. He slept like a baby. Moral of the story: form is common than price.