I looked at a CPAP pillow at my health store. I am currently using a "contour" cooling pillow to keep your neck straight. The one I looked at was basically the same, narrower, and had cutouts on both sides for the CPCP hose. Supposedly you get fewer leaks from pillow contact. One of the sales staff said she used on and loved it. I took it with a grain of salt since everything I looked at had a glowing recommendation from staff or friend.
What did you get for the unit? What is your CPAP model?