Sigh, pillows!
After an age of waking in the mornings with a sore neck I researched pillows. Four came well recommended — ranging from $50 to $175 (on special at 50% off).
Given the only real way to try out a pillow is to buy and use it I chose the cheapest, a Dreamticket 'Bliss' Hotel Pillow that arrived this morning.
Used plastic bottles are diverted from our oceans & landfills and get a 2nd life after being processed into super-fine microfiber [filling].
It worked fine for a brief nap, but I guess the real test will be a few nights' sleep.