Anything that is one seat away from the aisle is good enough for me. A window seat in the 747s and some 777s (with 3-3-3 config) is quite a nuisance, as I have to go out and "jump" 2 people at once, and believe me, some people have been quite ignorant, in which they seem to be quite angry whenever you try to go out of your seat. For comfort reasons of not disturbing others, I prefer aisle seats much more than window seat, as what happens on the outside of the aircraft is quite a cliche (unless something interesting happens e.g. birdstrike etc.). It becomes quite boring after a while. That's my personal opinion on it.