I purchased the full size version of this mattress about 9 months ago and have been extremely satisfied so far.
This is a hybrid mattress, which I had never tried before. I cannot have a mattress that is too soft as they can cause orthopedic issues that I don't need. This mattress is very comfortable, while still being firm, and honestly, I wouldn't have minded if it was even firmer. The softness is likely due to the top memory foam layer(s), but since I am at an age where even the slightest sagging during sleep can cause discomfort, I need a firm mattress. This one does the job well and at a reasonable price point. I highly recommend it.