For couples that just can’t agree on mattress firmness or material, consider an air mattress. Not one of those slip-sliding portable models you pull out of the closet and pump up when company comes, but a structured mattress with adjustable air compartments. The best known of these is the ultra-pricey Sleep Number Bed, which allows each sleeper to adjust the firmness on his or her side of the bed. The smaller the air chambers, the more precise you can adjust the bed (and the more you’ll pay).
