Some of the best mattresses on the market are the ones that don't have any coils at all. And the reason for that is they're going to offer the maximum pressure relief possible. That means you're going able to lay in that bed a longer period without tossing and moving getting shoulder pain or hip problems or circulation problems which makes you toss and turn and you don't get a restful nights sleep. They are the most expensive of the mattresses for example the Tempur-Pedic that we have right here are going to be some of the most expensive mattresses. And also they're the longest lasting mattresses that you can buy. You can expect the bed of a Tempur-Pedic to last twenty to thirty years. These, the Tempur-Pedic style beds are the ones that are going to last the longest, they're not going to show body indentations, where your body lays, they're going to lie more flat for the years to come. And they're going to be the most comfortable. They're going to leave pressure points in your hips and your shoulders, they cause you not to toss and turn at night which makes your REM sleeping last much longer and you get a much more restful nights sleep sleeping on an all foam bed. Whether it's the Tempur-Pedic or the latex types of foams as long as it doesn't have a coil system in it that's going to make you sleep much better at night time. So I highly recommend your all foam products and especially the Tempur-Pedic and also your latex products. So they're going to be the most most expensive of course, but they're going to be well worth it over the long run.