We purchased the Bella in Dec 2011. Excellent customer service and easy to order. Delivered within 1 week as promised. Set up was simple. Bed is very comfortable. We like the features of the Bella since it addresses issues mentioned in other reviews (no center seam sag, no sag on edges, urethane construction on air mattress to minimize mold). The Wisperflo pump is not as quiet as the name implies, but it has been two weeks and the air mattress has not lost ANY pressure, so it has been a moot point. The quality of the mattress materials is excellent. My wife and I are over 60 and she reports less hip pain. I did not get any obvious pain relief, but I sleep through the night much better. Although both Comfortaire and their competitor are rated A+ by BBB (this means both companies handle the complaints well), but we noticed that Comfortaire had only a fraction of the number of complaints in 3 years compared to the competition. To us, that meant we were less likely to have a problem and a hassle with Comfortaire.

When we first purchased the Sleep Number, we loved it. I would wake up in the same position that I fell asleep in and would sleep soundly. That lasted about 2-3 years. One side of the bed started sagging and even though the air chamber wasn't leaking, it wasn't as firm as it was originally. We replaced the pump, but had to pay a percentage, as the warranty is pro-rated. And they sent a refurbished pump that appears to be an older model than what we had originally. That didn't fix the problem. Sleep Number pushes all diagnostics onto the consumer: take the bed apart, take measurements, etc. They will then ship small parts, at a cost to the consumer and which have to be self-installed, to try to correct problems diagnosed over the phone. They have sent new side panels and risers that go under the air chambers. Problems still exist. The last straw is to replace the entire mattress cover, at a cost of $500 to me. I asked if there is ever a circumstance where the entire mattress is replaced, like other mattress warranties. The answer was no - they continue to try to have the consumer fix the problems in a piece meal fashion.

At this point, I'm done. I will not invest another $500 with Sleep Number. These mattresses are very expensive and it is a shame that the company refuses to stand by the product. They drag the warranty replacement items out which leads to a declining warranty value due to proration. The mattress was great for the first couple of years, but I expect more out of something so expensive. We'll go with Tempurpedic or a traditional spring mattress next. I will thoroughly research the warranty on my next purchase, especially if I spend the kind of money I spent on Sleep Number.

I bought this bed in roughly 2004 but I don't fully remember. The price I put is also off memory.

I have their fairly basic model. King size. The inside is: two twin (~35" wide) air chambers with 2" wide foam between the chambers and maybe 4-6" of hard foam going around all the edges. There is one sheet of roughly 2" thick convoluted poly foam over it. Then the quilted zip cover, which feels like it has 1" of foam or padding inside it. I put a 1" convoluted poly foam on top, then a thin cotton mattress pad.

I'm pretty happy with it. It still has kept its shape, no mold problems (we've opened it up to look), no sagging. The dip between the chambers is annoying and I cannot sleep with any part of me over the middle so I really have the equivalent of a twin bed. Now that I have the bed to myself (well with my big dog) I called and got a replacement queen chamber from them for $300, no problems, and I will just put it in my current mattress in place of the two twin chambers so I have more room.

The sleep number remote no longer shows the number but it does still pump/release air. I didn't want to pay to replace it. I keep the air chamber super firm (hardly gives when I unzip the mattress and feel it) but it's not their max.

My bed still looks new. No appreciate wear on the edge foam, chambers, or cover.

I have to repump air maybe once a week to maintain firmness. However, in one chamber I tried just plugging up the hole with a homemade silicone plug, and in the month I've slept on that side, it has not leaked at all.