A few observations:

i) Row 4 is missing a window on all 777s

ii) Row 6 is missing a window on 777-200s

iii) Second cabin is smaller and hence may feel more exclusive and less busy

iv) Bulkhead windows are great but bulkhead aisle overlaps the entrance to the galley so the curtain may fall against your feet or people/equipment might bang your seat

v) There is a small gap between the end of the seat and the frame of the seat in front and furthermore the foot end of the seat is reasonably narrow; accordingly it should not be a problem getting out of a window seat

vi) My personal preference is that best window seats = 7A/K and best aisle seats = 7E/F