I've sat in 11K on the way to LA and it wasn't toooooo bad. There were a couple of people at the bar and they can't see you because of the wall on the left of the seat. But the bar cupboards are in front of the seat which crew are in and out of.

9G looked quite comfortable. It was private enough and you can still see out of those big windows. I prefer being at the back anyway. And the 787 has overhead bins over the middle seat which is a bonus.