Having had my trusty Denton's Low Profile pillow for 7 years it is beginning to suffer the results of hot flushes etc and I am in a bad place with sleeping. I have had the same pillow since they came...
Sleeping on the tummy is a tut tut as it puts pressure on the spine! I was advised against this from the Neurologist. I damaged my spine from this form of sleeping and suffered a prolapse in the neck! So please think about why you are sleeping in that position!
As to pillow we use the Killarney Linen from Harris Scarfe