even if SG had 5A as a Green seat (best) Id still go with 2D. The seats in the middle area are great and IMO should all be Green except for the 1st and last rows. Why, cause the person next to you doesnt have to bother you in order to get out or in they have their own aisle
I Always try for 2-3-4 or 8 in the middle area. Ok Im not able to open the shade and watch some really nice scenery but if the person in the seat next to me is asleep then its not right to open it anyway where I might wake them up when the sun or light shines onto them. Nor do I have to play with how to get out or in cause the other person is asleep or busy doing some work.