I really like my cube, honestly.
I like that it doesn't slide around and that it's a flat surface that my face can't sink into and suffocate me when I'm lying on my side. The flat surface is also great for propping my hand up while I'm scrolling tiktok, and for not blocking my view when I use my flexible phone stand to play youtube videos. I never feel like my ears are getting squished, and I never feel like my head is basically resting on the bed. I do wish there was a slightly taller version for when I have to prop myself up due to heartburn, but I just place a firm pillow underneath it and that works fine. overall it is very nice and high quality.