Which Sleep Number bed should you buy in the 4th of July sales? I'm a mattress tester, here's my take

1. Sleep Number i8 Smart Bed
Was from: $3,399
Now from: $2,379.30
Saving: up to $1,739.70 at Sleep Number

Best for: Joint pain, combination sleepers, all-rounder.

Summary: The Sleep Number i8 is a popular smart bed from the innovation series. Like all Sleep Number beds it has adjustable and responsive firmness, as well as built-in sleep tracking. At 12 inches tall, the i8 provides exceptional pressure relief and support, with 6 inches of comfort layers adding a touch of plush to this high tech bed. With extra cushioning and adjustable firmness, the i8 can help soothe back and joint pain. Layers of ceramic gel absorb and release heat for cooler, fresher nights, making the i8 a good choice for hot sleepers (although if overheating is a constant sleep disruptor, consider the Sleep Number Climate360 Smart Bed instead). The i8 is an excellent all-rounder, providing support, pressure relief, and cutting-edge sleep tech.

Benefits: 100-night trial | 15-year warranty | 

Price history: There's currently 30% off all sizes of the Sleep Number i8. This matches the big saving we saw during the Memorial Day sales, reducing a queen from $3,999 to $2,799.30. We rarely see a saving better than this on the i8, so now is a fantastic time to shop. 

2. Sleep Number Climate 360 Smart Bed
Was from: $9,999
Now from: $8,999
Saving: $1,000 at Sleep Number

Best for: Hot sleepers, snorers, joint pain.

Summary: The Sleep Number Climate360 Smart Bed allows you to take almost total control over your rest. While most of the best cooling mattresses simply work harder to disperse heat, the Climate360 allows you to actually pick the temperature of your bed. With active air technology you can adjust the temperature cooler or warmer by up to 30 degrees, ensuring you can always snuggle up at just the right temperature.

Every Climate360 mattress includes an adjustable bed base, with head and feet elevation to achieve a pressure-relieving sleep position (and help reduce snoring). And, of course, the Climate360 comes with the adjustable, responsive firmness and in-built tracking you expect from a Sleep Number mattress. It's all-round control for a bed that you can completely tailor to your sleep needs. 

Benefits: 100-night trial | 15-year warranty

Price history: Sleep Number is offering $1,000 off all sizes of the Climate360 smart bed, reducing a queen to $8,999 (was $9,999).  This isn't the best deal currently live at Sleep Number, but it's still a hefty saving on an innovative smart mattress.

3. Sleep Number c2 Smart Bed
Was from: $899
Now from: $809.10
Saving: up to $219.90 at Sleep Number

Best for: Shoppers on a budget, combination sleepers, small rooms.

Summary: Smart beds have a reputation for high prices, but the Sleep Number classic range proves that doesn't have to be the case. The Sleep Number c2 is an upper mid-range smart mattress, providing adjustable firmness and sleep tracking at a lower price. At just eight inches tall the c2 won't provide the same pressure relief and support of the i8 Smart Bed, but the changing firmness makes it a good choice for combination sleepers. It's hard to describe any smart bed as simple, but the c2 offers the bells and whistles of high tech sleep in a more basic, and significantly more affordable, package. 

The c2 isn't quite the cheapest mattress in the Sleep Number range – that's the newly launched c1 Smart bed –  but if you have the budget for an upgrade, the c2 features thicker comfort layers for better pressure relief.

Benefits: 100-night trial | 15-year warranty

Price history: Sleep Number tends to reserve the biggest discount for its most expensive beds, so 10% off the c2 is standard. The sale reduces a queen down to just $1,169.10 (was $1,299) which is hugely competitive for a smart mattress. However, while the discount matches the Memorial Day sale, the MSRP has risen, for a slightly higher sale price.