What is the best seat in economy class of UA International 777? It looks like 17 A-B would be pretty good along with 21 H-J, keep in mind both seat are already in the economy plus cabin. I am flying IAD-FRA and MUC-IAD in December and the seats are wide open and would like to pick one that has the most leg-room. If seated in 21J will I be able to reach the aisle without disterbing the passenger in 21H? And what about 17A?