Personal comfort relevant to head and neck size (any pillow) and feel (sheets) is where it's at.
Asses what you're feeling, engage your brain, grow a pair of decision making spheres and buy supportive bedding.
I'm old enough to KNOW that there IS NO magic pillow, sheet or mattress. Too much marketing.
Ergo, take any sellers' super claims and stuff another pillow with them.
I respectfully suggest time and money spent selecting AND BUYING a firm, supportive mattress is smarter.
YES, a good mattress will cost more than any pillow. That's why they market cheap "silver bullets" such as pillows.
"Wonder Pillows" have ALWAYS been the "Cold Air Intake" for the household decision maker.