Originally Posted by
ffsim
I couldn't tell you based on my own experience; I've never sat in either. But I was under the (apparently
correct) impression that they're different. Something about seat cushion length / padding if I remember correctly from others' posts.
I have never been on the 777HD myself. I shall be flying the 788 for the first time in a 2 weeks but in PE. I'll take a look at the Y seat. I shall also have a few international 777 flights at the end of next month and December. I am keeping my fingers crossed that I may luck into the newly refurbished 777. I shall be in J.