From an old article via Shane Parrish.
The secret to mattress shopping is that the product is basically a commodity. The mattress biz is 99-percent marketing. So just buy the cheapest thing you can stand and be done with it, because they’re pretty much all the same. And that’s all you need to know.
Mattress makers rename identical products for each different retail store. Different labels, exact same guts. Why? Obfuscation. It’s hard to shop for the lowest price when you can’t compare apples to apples. Lucky for you, they’re all subtle variations on the same apple—not only within each brand, but even among different brands.
The heart of an innerspring mattress is the coils. Otherwise it’s just foam, cotton, quilting, and stitches. But the big-name mattress makers (with some exceptions) all get their coils from a single company, Leggett and Platt, for their highest-end mattresses down to their lowest. This is akin to every single car on the market, Lamborghinis to Kias, using an engine made by Ford. Except that mattresses are far less complicated than cars. In fact, they’re so simple that there’s no real difference among them at all.
My favorite mattress name encapsulates the paradox: Simmons Beautyrest World Class Granite Plush. Granite Plush???