We've been on the Wind and the Whisper and liked the Whisper better. It's my understanding that they built the Whisper and Shadow with much input from their prior Wind & Cloud guests. The Whisper & Shadow's suites have separate bathtub and shower, and also a double vanity, unlike the Wind & Cloud which have a tub/shower combo and one sink.

I also like the fact that the door out to the balcony on the Whisper is a slider, vs. a swing-out door on the Wind. The slider definitely makes better sense and better use of the balcony space.

The commons areas were improved on the two newer ships, as well. The only thing that was not improved was the fitness center - the Wind's was much, much better than the Whisper's. Not that we spent a whole lot of time exercising!