FormerFlyer:
DANM
I think you'll find you were either in J class with a 2-3-2 config on a 777 or you were on a 767 seeing how you say the legroom was only 31".
That's right - AA's 777s are configured 2-5-2. It's not much fun being in the middle of the 5.
BA's World Traveller Plus is a good equivalent to VS' Premium Economy. Don't know much about VS pricing, but BA's best valid WT+ fare is usually £200 per sector over the best valid economy fare - although there are times when you can't buy the best economy fare so the effective supplement for the flight is less than that. At fare sale times, the best WT+ fare often comes down to a supplement of £150 per sector.