has better cabin crew in terms of being more friendly
has better seats, ESPECIALLY in first and business class (just cannot compare to MH
was streets ahead as well-a much larger selection of movies, AVOD, etc.
Lounges-prob on par.
Klia is better looking than Changi,as Chrisrad said but Changi offers infinitely better connections and a wider range of facilitilies.
Overall impression: I think SQ
is a much classier carrier with alot more style, even down to liveries, image, etc. They would be my choice over the two. MH
is still a bit 'kampong' but has made very significant strides in the last few decades.