Your mattress choice these days includes deciding between a traditional innerspring mattress and one of the newer types on the market, including foam (such as the Tempur Pedic), air (such as the Sleep Number bed) or latex (such as Royal Pedic). Experts agree that any of these types can provide proper support, and that choosing between them comes down to how much you can spend and whether you're willing to pay a premium for a foam or latex mattress that doesn't need flipping and reportedly lasts for 20 years.