..........The 767 is MUCH more comfortable. While the seats themselves are not so bad, they are slightly narrower and the 3-3 configuration is not practical [note they are trying to fit 6 seats per row where previously there were only 5 seats]. The 767 2-3-2 is much much better for such a long flight. Also, taking the the 767 increases the odds you will get empty seats on the plane, giving you potentially more room to spread out. [this was the case on my way back to CDG in October and I ended up getting a whole row of 3 in coach to myself] ....