Our former mattress was a Sealy Hybrid Performance in the queen size. When we decided to upgrade to a King Size, we tried out another kind of mattress, and then another one. But neither were as comfortable as the Sealy Hybrid Performance, so after just a few days of uncomfortable sleep, we got the Sealy Hybrid Performance King Size mattress. Now we have a wonderfully soft mattress, which is also big enough for us both to stretch out. We do feel like we are living like royalty!