I recently flew HND -> GMP and ICN -> NRT on Korean Air. Hadn't flown Korean Air since an ANC-ICN flight in the 90s. I think the service has improved a lot since then! I was in economy and I really liked the food which surprised me. I thought the flight attendants were incredibly nice and seemed to switch easily between English, Korean and Japanese when interacting with passengers. My flight to/from the U.S. was ANA which was fine, but I liked the food and the flight attendants on Korean Air better.