Clearly the best option if not in "real" F!

For me it depends. Window in J on the upper deck to get the side storage bins and so I can sleep undisturbed if it's long haul. In the old days it was always a window on the RHS of the plane, irrespective of class, whenever I flew into Kai Tak - that was just the best approach ever!

Aisle for domestic short haul, especially in economy.