Flying out on Dec 18th BA LHR -ORD in CW .
Preference is always a window seat that l can see out of,and perhaps ideally l prefer not to climb over someone, but if needs must ( surely they wont be asleep on a day time flight ) But l read somewhere seat 13 gives the best view. Im happy to pay the fee to pick my own seat, but which seat is best ?.
Some of us do so much enjoy the action out of the window.

I flew back from LAX on the A380 in January , l paid the money to upgrade at the desk and ended up with no window, granted it was a night time flight, but no window was a bit of a pain .