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In Saatva's Memorial Day mattress sale there's one deal that stands out above all others: $400 off the Saatva's 5-star rated Classic mattress, with a queen down to $1,779 (was $2,179.) It's the best Saatva mattress we've tested, so of course it's our stand-out pick of the sales.Our team of seasoned testers have tried just about every kind of bed you can think of, from budget foam mattresses to luxurious beds fit for the bougiest of hotel suites. But one mattress stood out among the rest: the Saatva Classic. We’ve rated it the best mattress you can buy for five years running.Ask any member of our team and they’ll tell you they’ve recommended this bed to their mom, best friend, even strangers in the street; it's just that good for almost every sleep style. Here, we’re breaking down what makes this mattress special and why it's our favorite in the Memorial Day mattress sales.The Saatva Memorial Day sale might be our top choice but for more options, check out our Memorial Day mattress sales LIVE blog.Saatva mattress deals: quick linksSaatva Classic sale — save up to $400Reduced to $1,779 (from $2,179) for a queen at SaatvaSaatva Memory Foam Hybrid sale — save up to $400Reduced to $1,699 (from $2,099) for a queen at SaatvaSaatva Latex Hybrid sale — save up to $400Reduced to $2,199 (from $2,599) for a queen at SaatvaSaatva Contour5 sale — save up to $400Reduced to $2,599 (from $2,999) for a queen at SaatvaSaatva RX sale — save up to $400Reduced to $3,049 (from $3,449) for a queen at SaatvaSaatva Solaire sale — save up to $400Reduced to $4,199 (from $4,599) for a queen at SaatvaSaatva Zenhaven sale — save up to $400Reduced to $3,099 (from $3,499) for a queen at SaatvaSaatva HD sale — save up to $400Reduced to $3,049 (from $3,449) for a queen at SaatvaWhy the Saatva Classic wowed our mattress testersIt’s comfortable in all sleeping positionsA mattress that works for all sleeping positions is rare. A bed that’s too soft causes the hips to sink when you’re back and stomach sleeping, resulting in a misaligned spine and potential pain. Too firm, and side sleepers risk excess pressure building at the hips, shoulders and knees.That's fine if you sleep alone, as you can pick a mattress for your preferences. But for bed sharers, versatility is essential (unless you both sleep in the exact same position.) The Saatva Classic strikes that perfect balance.I hadn't slept that well since I was a teenagerIn fact, it scored full marks in our pressure relief tests, something no other mattress has done (no wonder we rate it as the best.) This makes it easier to avoid hip and joint pain, because you're elevated but cushioned so your body weight is spread evenly across the bed.In fact, Claire Davies, Sleep Editor, said after her first night on the Classic that she; "hadn't slept that well since [she] was a teenager."Plus, it comes in three firmness options. If you prefer a softer feel, opt for the Plush Soft. If you like a harder bed, then the Firm will keep you comfortable. Looking for something in the middle? Luxury Firm is your best bet.