B777 anf A340/330 get my vote. They are the latest generation of aircraft. They have all that gizmos that make your life easy (C/C and pax) inside, like electronic panels from which you can control absolutely everything in the cabin (lights, temperature, entertainment system, fires, inoperativities, doors etc), and a personal screen with movies, games, etc on each seat, economy included. And let's not forget the spacious crew rest bunks, especially on the Airbuses.