I was lucky enough as a QP NB (I don't fly enough to get any reasonable status) to score 80A MEL-LAX and 71D LAX-MEL last year. They're both great seats, however I found 71D a better seat for sleeping. I found that I got a bit cold in 80A and there was also lots of light and noise from the galley.
71D, I was lucky not to have anyone sitting next to me, and I found that I slept really well in that seat (maybe that's also coupled with my upgraded QC15's, the time of the flight and having no one next to me).
The other cool thing about 71D is that you've got 2 screens to play with. So the one on the seat back, I turned to the air map or the tail cam, and the fold out one to the movie I wanted to watch.
The only missing thing for me was a foot rest.
71D, I was lucky not to have anyone sitting next to me, and I found that I slept really well in that seat (maybe that's also coupled with my upgraded QC15's, the time of the flight and having no one next to me).
The other cool thing about 71D is that you've got 2 screens to play with. So the one on the seat back, I turned to the air map or the tail cam, and the fold out one to the movie I wanted to watch.
The only missing thing for me was a foot rest.