I have both and actually like the layout and music of Night Moves more. Caribbean Cruise is also too generous with awarding multiball when you hit the saucer (unless there is a setting to change this that I'm not aware of, but I could not find one in the menus). But they are both cool novelties and a nice way to squeeze more pinball-goodness into your home.
Disclaimer: I just got my Caribbean Cruise last month, and have only put in maybe ten games on it, so my opinion may very well change once I have a chance to put in more time on it.