I'll stick my oar in....
1 A+K are great if there are two of you travelling; it doesn't get any more private. That said, when all the blinds around you are down, it does feel a bit like sitting in a large plastic IKEA wardrobe. Rows 2 and 3 are better if you're on your own; row 1 with a stranger in the next seat could be a little too intimate......