We use a pocket coil pillow top mattress it works well enough. It is a Bassett, made in Canada. Well constructed. We’re probably due for a new one, although it’s well over 10 years old and still comfortable.
My wife sleeps with a water base pillow. She has a lot of neck problems and swears by it.
https://www.amazon.ca/Mediflow-Original-Fiberfill-Waterbase-51x71cm/dp/B006MIW6SI/ref=sr_1_2_sspa