The Vision class ships are wonderful ships! I've sailed on the Grandeur, Vision, Legend and Rhapsody.
Tons of glass, and beautiful interior decor, make these still have a special place in my all time favorites list.
At 70,000 tons they're large enough to offer plenty of ammenities, but small enough that when you meet someone, you actually get to see them again before the cruise ends<G>
Personally, I don't like the Voyager Class at all. Beautiful interiors, but not very ship like. I got the feeling I was at the mall for my vacation. You pretty much have to be up on the top decks before you can find a view of the sea.
Families are loving these ships though, and they're doing very well with bookings, and making people happy! But then families like malls and theme parks too.