Thank you all for the great replies. It gives me great insights on what points to consider. Eventually my preference will go out for the 787 due to a better roster and future proof. And, but not as a first argument, because it's a technical master piece of this time. As well the better humidity is point to consider, we are up there for quite some time
Didn't think of the 777/787 same rating point btw, thanks for that as well!
@6000PIC : Due to the fact that these newer aircraft have rising use of computerized interfaces I think that younger people can more easily adapt to these cockpits than older people. Young guys are raised with computers
But maybe handling characteristics of the heavy's is something you need more experience for.