Had a 4K$ Tempra pedic Mattress before i bought my PURPLE. almost returned it in the first week. You have to wait 25 days before you can return it. SO GLAD I DID. Since about the 20 day mark all of my sore back issues went away. I can actually sleep. Looking to replace the mattress in my camper next, with a purple. Absolutely love it! Would recommend a Purple to anyone!! My mattress was a Purple Plus!!