A good pillow aligns your spine for sleep. I tested two approaches. The Purple pillow ( purple.com) is a onesize-fits-all lattice of a rubbery material called a gel elastomer. Its rigid edges support your neck but it collapses in the center to cradle your skull. It’s also heavier than any pillow I’ve ever encountered and smells weird. But that fades, and it wascomfortable though best for a back sleeper. I’m a stomach sleeper, so Bedgear customfit me for a Dawn 1.0 Performance pillow ( bedgear.com), a thin slice of foam (to avoid a kink in my neck) wrapped in cooling fabric that actually worked. Comfy. I also inquired with two of New York’s finest hotels, the Mark and the Pierre, about traditional pillows. Both use Downlite Hotel pillows containing duck feathers and goose down. Starting at R600, you don’t have to be able to afford the penthouse suite to buy one.