I think SQ
is probably the best Star Alliance carrier as far as high quality seats, service and very new planes. You would have to fly something like SFO
. It is a bit longer and it might be a bit more expensive, but the Spacebed offered by Singapore Airlines is great. I enjoyed it on an 18 hour flight between EWR
However other airlines are revamping their business classes too, so there are other options. ANA in particular is pretty good and going via NRT
would be a lot better. I've flew Asiana a while ago and was not very impressed. I've also flown Thai, but never on their long haul equipment and while they have great service, they didn't seem to be up to the caliber of SQ
. I just suggest that you avoid UA
since their business class is outdated.
If you have never designed an airplane part before, let the real designers do the work!