Recently had my first A380 experience with SQ SIN-AKL, cattle class, middle of the centre row. I was not impressed. 3 out of 4 of the nearest toilets were u/s, and must have been for a while (this seems to be a perennial problem with the A380?). Pax asked to exercise 'restraint'! Mrs r1 then realised that the upper deck toilets were just above us, and she could hear every flush. Of course, that meant that I could from that point on.
This trip also included my first 789 trip as well with AirNZ. A bit more pleasant, but the seats are far more comfortable upright than in recline...