If you want a good pillow (and are willing to buy it from Amazon), this is your best bet. I've had two of them for almost three years now. They're absolutely phenomenal, and they're washer and dryer safe to boot.
I have one of this exact pillow! I make sure it leave it kinda separate from my blankets and other pillows so it doesn't retain the heat from the day (I'm also no stranger to putting it in front of the AC a bit before I'm going to sleep).