The two cabins are mostly different from an "intimacy" point-of-view. The 744 F cabin seems more intimate due to its location ahead of the galley in the nose of the aircraft. However I find it a bit more "cramped" than the 777 F cabin. The 777 F cabin seems more open and airy to me. I don't have any issues with the traffic flow through the cabin due to the galley being in front. I think that for two people planning to travel together with a choice between the 777 and 744 that the 777 would be preferable because there are 3 sets of double seats in the middle and the don't seem as jammed in there as on the 744. YMMV.
[This message has been edited by tfjim (edited 11-27-2002).]