Bed comfort is relative, as each person has different criteria that determine what makes a bed comfortable. I like a supportive, slightly soft mattress. I want to feel cozy and enveloped in bed, not like I'm sleeping on the floor.
The most comfortable Disney bed I've had recently was at CR. It was absolutely sublime! The bed I had at BCV last February and at BWV this month were very similar, and very comfortable. All of these beds appeared to be fairly new when I did my routine bedbug check. I know they were in the process of replacing mattresses at BCV when I was there, because I saw them in the hallways bringing in the new ones and taking out the old ones.