Recently flew on a 787-9. I've flown on the B/E Super Diamond's on a 772 so the seats weren't unfamiliar. Comfortable, great desk space. Not sure what the complaint is regarding the windows not dimming dark enough. Didn't really notice a difference in cabin pressure on the Dreamliner vs the 777's. Compared to the 77W's, there's definitely more vertical leg room on the Zodiac seats than the B/E. The IFE control placement is better on the Zodiac as well. But the desk space and storage goes to B/E. A side note, 77W's mini J cabin is overrated.