This great post was taken from : http://rue309.wordpress.com/2008/09/03/which-bed-which-pillow/
Recently, I have been asked by several patients which bed is right for them, or which bed is the best one to buy. The question also arises from time to time about when it is time to replace a mattress. "Which pillow is the right pillow?" is also a question that comes up quite frequently. Such simple questions rarely have a simple answer. In order to answer these questions, taking a look at what is available in the marketplace would be a good idea.
There are generally four types of beds available today. They are the traditional coil spring mattress, waterbeds, air beds, and foam beds. Each bed has distinct advantages, and some have disadvantages.
The Coil Spring Mattress
The traditional coil spring mattress can be bought in varying degrees of firmness. Soft, moderate firmness, firm, extra firm versions are available, many with or without a pillow top. At any given price point, the quality of the mattress made by any major manufacturer is about the same. One company simply cannot make a bed that is four times better than a competitor at the same price. When it comes to the traditional coil spring mattress, the perceived difference regarding which is better is a matter of personal preference. In other words, what is best for one person may not be at all good for another person.
Even the best coil spring mattresses last only about seven years. The primary determining factor of how long the mattress will last is the weight of the person sleeping on the bed. All other factors being equal, a 5′4" person who weighs 110 pounds will get a much longer life out of a mattress than a person who is 5"10" and weighs 260 pounds. If you can see or feel an indentation in the mattress, it is time to replace it. It does not matter whether the mattress is one year old, or seven, seeing or feeling an indentation is evidence that it is time to replace it. Seeing a depression in a $2000.00 mattress that is six months old is clear evidence of poor quality, regardless of who manufactured it.
Interestingly, the manufacturers of coil spring mattresses have added a memory foam option to several of their models. This appears to be somewhat of an endorsement of the true memory foam mattresses, discussed below.More...
Memory Mattress, Memory Foam Pillows
memory foam