On the B777-200ER from New York to Seoul lasting more than 13 hours, the flight was smooth, the attendants were friendly, the seats were comfortable and had enough leg space. Very clean, spacious, mostly quiet except for one child having certain reactions at times (and the flight steward tried to help). Two items were given to every passenger: In-flight slippers, alongside a toothbrush with a travel-sized toothpaste. A thoughtful and very-welcome gesture.
Korean food such as bibimbap for lunch was delicious (with good quality gochujang and sesame oil) and well-presented, although the veggies did not fare so well when it came to the steamed rice selections with gochujang-flavoured beef or chicken for the second meal. Did not try the steak for lunch, so unable to comment on that. The mid-flight snack of a ham and cheese roll also went down well. I was very well-fed, and my hot water requests were quickly answered.
Entertainment was slightly less varied than Cathay Pacific or Singapore Airlines, but still very decent. For the ticket price relative to overall quality experience if flying from New York to a Southeast Asian destination, this airline is better than those 2 airlines (IMHO, but YMMV). Asiana is one of South Korea's two main carriers, and provided a positively memorable experience with this aircraft.
Even though I was already at the boarding gate but had gone to the store next to it to look at Maui Jim sunglasses wonderfully-designed to truly protect the eyes from the sun in a stylish manner (and not easily available outside certain countries), the Asiana representatives at the counter later called my name alongside the gate number and flight number, to ensure I would reach the correct gate with enough time. Boarding was also quick. Flight took off on time, and landed on time.
Notes: If you have any specific dietary requirements involving animal-free meals or not eating certain meats for personal reasons, check to see if special meal choices can be booked to accommodate your preferences, prior to buying a ticket.