I haven’t done first on the a380 yet however I think the 787 if you are flying on your own and don’t want to use the buddy seat is excellent product. The only thing there is some of the interiors I think look a little scratched and falling apart for the age of the aircraft.
I also think the 747 is excellent which I know is not to everyone’s tastes but 2a/k are incredibly spacious around the seat. Also it’s just more iconic I think!
The one I always try to avoid is the 777 mainly because of the galley light that comes through from the front unlike on the 747 and it just feels more cramped and not as exclusive as the 747 up front or the smaller 787 cabin.