Beautyrest Black Hybrid X-Class Medium Mattress Review. Moving up price-wise, the C-Class series includes an additional cooling feature: Beautyrest's Right Temp foam infused with graphite, a known conductor of heat. Beautyrest Black L-Class Extra Firm Mattress Review. The Beautyrest Black mattress line has won recent acclaim with its advertisements and celebrity endorsements. The Beautyrest collections have a lot of different mattresses to offer. They’re currently available in three different tiers, dubbed the Black, Silver, and Platinum collections. This model is the middle comfort of the four X Class hybrid models in the Beautyrest Black collection. Beautyrest Black Hybrid X-Class Mattress Reviews. Simmons Beautyrest is one of the most well-known American mattress brands (and rightly so; it was founded way back in 1870). Updated November 20, 2020. Updated on November 20, 2020. Updated November 20, 2020. The company says … L-Class Extra Firm: 13.75" $1,799: L-Class Medium: 14.25" $2,099: L-Class Plush: 14" $2,099: L-Class Medium Pillow Top: 15.75" $2,399: L-Class Plush Pillow Top: 15.75" $2,399: Beautyrest Black C-Class. If you’re looking for a medium-firm feel, but tend to be a hot sleeper or live in a warmer environment, our Beautyrest Black with Cooling Upgrade is perfect for you. The Beautyrest Black X-Class Medium is a medium-feeling mattress made by Simmons and it comes highly recommended for its back support and pressure relief. Black X-Class (hybrids with combinations of foams and the T3 Pocketed Coils) Black L-Class (entry-level) Hybrid (mid to upper range, $1,099-$2,399) Harmony Lux (mid to upper range prices $1,199-$2,099) Silver (lower to mid-range prices $589-$1,179) BRS900 ($589-$859) BRS900-C ($1,019-$1,099) Beautyrest BR800 (lower end prices, $619-$739) Type of Construction. This Collection has four mattresses starting from $2,199 (in queen size.) As the luxury line of the popular Beautyrest brand, it markets itself as the sleek high class sleep system for those that know how much sleep matters to productivity and an elite lifestyle. The Hybrid X-Class Collection is the hybrid group of beds in the Beautyrest Black brand by Simmons. The Beautyrest Black L-Class Extra Firm is the lowest price Beautyrest Black mattress with a price of only $1,999 in a queen size.While it's very firm, it does offer the best price to get a bed from this luxury brand.