Pillows

With probably a large percentage of followers to this site on the wrong side of 50, im sure im not the only one carrying the odd ache or three from a life of hard work.
About 20 years ago I hit a contour bank in a paddock, that i didnt know was there, in the long grass in an early hilux, while boomspraying for a customer.
The hilux made the landing ok, as did the rest of the rig, but my head tried real hard to punch a hole in the roof of the hilux.
It didnt succeed, not even a dent, but the experience is coming back to haunt me, along with numerous other activities that a hands on working life has dealt.
All healed ok at the time, but as time marches on I have been having trouble with my neck over the last couple of years or so.
My chiro suggested I use a wave pillow.
This raises the question of what pillows are available, and what do others use and what works, and where would i buy a specialised pillow, a pillow shop?
Any pillow talk will be greatly accepted !!

Cheers Pesty