I'd try and avoid the 777 at all costs, its a bit embarrassing that they still offer a product this old and charge A$14k return to Europe!

Can't help on specific seats for the 787, but I would go this plane all day over the 777.

We are flying to Europe on points in a few weeks and its really taken the shine off the flight aprt of the trip knowing we will be rocking what feels like a 20 year old business product!