Given th option, I would take the 777 every time. I prefer the layout in 1st, it feels like you have more space. I also find it to be quieter.

The 15/16 used to always be a 777 which is one of the reasons I used to book it instead of 11/12. They were nice clean, modern planes. Even when they had old 1st they seemed better than what I've been flying on recently.

I could always move to Frankfurt and start flying with Lufthansa....