I have a day flight LHR-ORD in 787-10 Club. Thinking about which seat to choose... The current 5K probably has great comfort and would be served first but last when getting from the plane at ORD - which might make a difference in the CBP waiting time... So maybe 9K, or even 13K in the smaller cabin... Any ideas?
I think any K seat in the front cabin or 13/14K in the next cabin would be fine and of course the K side will better for going westwards as the Sun is on the other side.
Beware 6K has a window blank though but still has 1 window so I'd avoid that. 9K would get you off quicker but I don't think there will be much in it.
Here's a nice wee video of 5K and that front cabin @1:55 onwards.