Sleep Number is a well-known brand in the mattress industry that offers a wide range of adjustable beds. Their mattresses feature one or two air chambers, using a pump to inflate or deflate the air to adjust the mattress firmness to the user’s preferences. This makes it possible for couples to independently adjust firmness levels to their own liking. Sleep Number also offers SleepIQ technology, which allows users to control their bed position, track their sleep, and understand how sleep impacts their overall health and wellness. However, some customers have noted that Sleep Number beds are more expensive than other standard mattress options and there have been some complaints about durability. Overall, Sleep Number has a high rating on the Better Business Bureau’s website. It's important to note that individual experiences with Sleep Number beds can vary, and it's recommended to try out a bed in person if possible before making a purchase.