Just got off the Spirit. In the room is a little sign that claims that the bed is a Serta Super Comfort bed blah blah blah... So at least the Spirit has the new beds. But whoever makes them, yes they are very comfortable. I'm not sure if its the bed or the fact that by the time your head hits the pillow, you are worn out for the day. Either way you should sleep VERY well.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013