The A380 is a great plane for a journey that long. It does seem quieter and more relaxed. My regular flights to SFO flipped to LAX for a bit as they had the first BA A380 on that route and the old 777 on SFO was worn out. Now they have an A380 on SFO as well if you choose the right flight.
I notice BA also now have a new Dreamliner 787 running daily LHR to San Jose (SJC) flights if you go t the west coast. Its a good little airport, fast through and less queue-centric in most places !
BA have also opened a Gatwick to Oakland (North bay) route as well as the 2-a-day to SFO. Its a wonder they don't sit nose to tail all the way over. They have some attractive pricing on the OAK flights and hopefully the Trav+ seats might even be available.