Originally Posted by RealHJ

Service and food is undoubtedly better on KE.
Take the steak. KE has their own ranch and raises their own cattle - they do not import or buy their beef from the outside but grow their own. It's as good at or better than most steakhouses and is cooked to order.

Make sure to check here to see what specific aircraft KE has on your route (compare to the seatmap):
http://www.koreanair.com/local/na/gd...u/of/au_of.jsp

KE 777-300s both are good: both have truly 180 degree parallel to the floor liet flat Prestige Sleeper (as good sleep as in MU 33E, more comfortable than any DL aircraft as it's regular rectangular shape with no funny edges or corners or cutouts or legs in 'coffin')

KE 777-200 has one Prestige Sleeper (excellent) one Prestige Plus (OK) config. Prestige Plus is on par with NW WBC A330 seating: angled lie flat. Of course superior to the 1980's style recliner 767-300ERs on DL (but not as good as DL 767-400s lie flats).

KE A330-300 and A330-200 are the same as 777-200: one Plus and one Sleeper config for each.

So, you have to look at the specific aircraft your route has, you can't generalize just based on the type.

But even if you get Prestige Plus, it is as good at NW (DL) A330, better than DL 767-300ER. And of course Prestige Sleeper beats any DL config for sheer sleeping comfort (though not all seats are direct aisle).