You can please some of the people all of the time; Some of the people part of then time but you just cant please all the people all of the time to paraphrase honest Abe.
That said I will give you an honest, from my perspective, objective report of the Infinity sailings of Jan 20, 2013 to Buenos Aires and On Feb 3 to Antarctica...a total of 28 continuous days. I think that a steady observation of day in and day out has pretty good view of the ship, her crew.
The Ship: Is very large stable and has so many public spaces, bars and nooks that it took me 20 days to get to all of them. Carrying 2000 people is to me a very large ship but it handle it well in even 20+ seas and 60kt winds. The Infinity looks and feels like a ship is supposed to and has avoided all the silly things like lawns, rock climbing, ice skating and zip lines.
Thye best cabins on the ship are the 5 inside cabins that are on deck 2 and longitudinal rather than transverse...