I recently got a Nolah Airfoam pillow. Thus far it's amazing for me. I sleep on my side with arm under my head and this pillow isn't too thick, and I don't feel floaty on it. I prefer my head feel sorta grounded, not like on a gimbal.
Time will tell if it doesn't flatten out, but so far I love it. As long as it doesn't collapse I'll never go back to random pillow or the Talax Latex Malouf pillow (which admittedly has good qualities but is not quiet right for me).