Bought the hype and got myself a Pluto pillow pre-pandemic. I'm super picky about my pillow and thought Pluto would be it, but I felt like it was just another foam pillow. It's since been given to my husband to try/use. He liked it enough not to toss it. I guess I'm just not a fan of foam - but if you are, it might be GREAT for you! I know they have a sleep guarantee for returns, but I didn't get my act together to return it in time.
There's nothing they improve based on the foam materials... the foam core is too springy and gives me a sore neck by morning.