I think I have hated this bed from day one!We have the select comfort 3000 king size with dual chambers.It does't matter how you adjust the chambers if you don't stay exactly on your side of the bed you end up sinking into the dip in the middle.My back hurts so bad I only get a few hours of sleep every night, and I can't wait to get up in the morning or should I say the middle of the night.If my husband get up at night it feels like I'm falling to the middle of the bed.My husband however loves it, he sleeps like a rock... read full review »