Mattress topper?

Best mattress topper? Generally I like firmness, but this pregnancy is so uncomfortable, I need something more than my 6 inch thick mattress. I’m looking into mattress toppers, and I’m super interested in the tempur-pedic topper, but it’s a little pricey. My dad is in love with the my pillow products, so I was looking into a my pillow topper as well, but that’s close to the same price as the temper-pedic. If either of these are worth it, I’d willingly spend the money for a night of comfort.... any help or suggestions are appreciated!