You make very good points.

In trying to make a decision I endlessly scrutinised the available photos and videos - and was suddenly taken aback at how close the IFE screens are to each other in the EF seats. It seems to me that it would be hideously distracting to have one’s neighbour’s massive screen so close to one’s field of vision. My partner and I do very well on the middle seats of the 787 and 350 where the screens are angled away from each other. So I think we’ll forego the novelty of the “double bed” configuration in favour of more control over our individual spaces.