Booked an BA award MAD-BOG in economy on the A359. I'm able to select XL seat or Em. Exit seat free of charge
Both 39A and 39L are available. So is Em. Exit row 38B, 38C and 38J and 38K. Front row seats 21A and 21L are also available (directly behind Premium Economy).
Any first hand experience? - which seat would you choose? I'm inclined to select 39A or 39L, but open for suggestions.