Mine are not the longest of legs and I almost always end up sitting on the aisle passenger's legs as I climb out of the window seat to get to the loo. Luckily, he is my other half. But we much prefer the 777 because of the spaciousness, the forward-facing seats and the fact that one's feet and lower legs do not get trapped in the tunnel as with the 787. When travelling together, we always get the side block (window and aisle) but when travelling alone, we choose the middle block.