Hi ChristinaM,
Before you pull the trigger on any Tempurpedic I would suggest reading post #1 here and the information it links to. while Tempurpedic uses mainly good quality materials … there are many other manufacturers that use the same or better quality materials and sell for significantly less. Like most of the major brands … they are not good value at all.
The Cloud lineup uses 4 lb memory foam in their construction (along with other densities of memory foam and the polyfoam they use in their support layers) which is medium density memory foam and will soften faster than higher density memory foam. The primary factor in the durability of memory foam is its density and 5 lb memory foams are more durable than 4 lb memory foams although many people like the faster response, greater breathability, and lower temperature sensitivity of many 4 lb memory foams. You can read more about the many different types of memory foam in post #9 here.
You can read more about some of the Tempurpedic models in post #10 here and some of the reasons for the “myth” of Tempurpedic in post #2 here.
Once you have read some of the basic information you need to make the best possible choices … and hopefully eliminated the worst ones … if you let me know the city or zip where you live I’d be happy to let you know of any better options I’m aware of in your area.
Phoenix