Off to Chicago in F with my partner in April next year and about to book in the current sale.

We have a choice of the morning flight in a super hi J 747 or the afternoon flight in a 777-300. I'm just wondering if any of the frequent flyers on here have a preference that may help us choose? We travelled in a 747 F a couple of years ago but that was a mid-J with an older IFE.

Timing wise it doesn't really matter that much, but I suppose the afternoon flight is a little easier. So, providing there are no equipment changes, does anyone have any thoughts on which might be a better experience in terms of the aircraft? Thanks