Same headsets will be provided on both flights but the noise cancelling only works with the New Club World seats - I haven't tried the Bose headsets, but it seemed pretty good in comparison to my old Sony noise cancelling ones, and a big improvement when compared to the old CW seats.

Like some others have posted, there are still some teething problems with the AVOD in the refitted aircraft, hasn't worked properly on my last two flights back from JFK (one never resolved, on the other it was working when I woke up in the morning).