I just thought I'd contribute a little to this thread, having sat in seat 70K recently on BA 12 from SIN-LHR.
Seat 70k
Legroom is aplenty, for sure. Because of that, any potential passengers queueing for the toilets also don't encroach into your space. I also made a nice little corner for all my belongings after takeoff.
There's a toilet immediately behind the crew seat, which WT passengers were allowed to use. The door faces inwards, so there is no light disruption at all. Very good for 70K. However it makes the aisle seat of the last row of WTP a horrible seat.
Taller people might find this handle too in-your-face and the curvature of the cabin too pronounced, but I think it's just a small niggle that you'll get used to after a while.
Overall it's a great seat. On the flip side, it really did get very very cold as the flight wore on, so much so that I was unable to sleep well.

Also, I personally found the lack of a window rather disconcerting as I normally always take window seats as far as possible.
These 2 factors have convinced me to revert back to a regular window seat on my next A380 flight

But that's just me!
I hope the pictures have helped