My two cents having just flown KAL from ATL-ICN on a Boeing 777-300 two weeks ago. I agree the KAL service was outstanding. The FAs were very attentive and polite and the Korean food service was wonderful.

However, I believe the Business Cabin hard product is actually better on the Delta 777. The seats were similar, but Delta's fish bone arrangement and the associated accommodations are much more comfortable. The KAL lay-flat seats are nice--but, on a 15+ hour flight, the privacy that comes with the Delta layout makes a world of difference. And I also like having my own air vent.

I enjoyed my experience KAL, but on my next trip to ICN I plan on taking the Delta connection out of DTW vice the KAL flight from ATL.