KE A380 rocks. All BE cabin on the upper deck. Lots of room up there thanks to that. Also for the A380, they have the bar in the back of the upper deck with seating. It makes for a very nice diversion on those really long flights...To be able to get up from your seat and plop down on the couch alongside the bar while a pretty Korean Air flight attendant serves you a drink and a plate of snacks is really awesome.

You wont get that on any DL plane or the KE 777.

Also, even though the KE A380 is 2-2-2, there's tons of room. Plus, you get a flatbed and unlike Delta's J 767 seats, there is ample leg room with no 'coffin' like affect.