to buy an off-brand mattress, but after reading the reviews and researching the manufacturer I went ahead and bought it. Love this mattress! The component system made it easy to adjust the firmness and/or softness. You simply rearrange the layers to find the comfort level you want. I just wish the softest layer of memory phone was thicker... I have no idea why they even call it an RV mattress, it fit my cal-king foundation perfectly. Even though the the mattress is VERY tall, the sheets do not slip off of the foam like my old mattress. Due to illness, I spend a lot of time in bed and since the first night I seldom toss & turn anymore. I actually have awakened in the same position I fell asleep in. My dog doesn't even wake me up anymore when she jumps up and down off of the bed at night, the absence of motion transfer is awesome. I had no problem, with heat retention nor did I have any of the often commented smell issue, but the first day after unwrapping I did air it out and sprayed a little Febreze, but I still couldn't smell anything! The only negative is that the included cover is EXTREMELY cheap, so I bought a better one, you should do so too, especially since this mattress is the 1/3rd the cost of the Tempur Pedic brand.