I used to like those 757s they used for Oceania Micronesia flights. Tons of legroom in F, seats reclined and had legrest that came out, plus full Business class amenities - blanket/pillow/kit and good service and food.
NRT-ICN was relatively short so it didn't usually get these extended F cabins and service, but they were great on the NRT-GUM/SPN/ROR flights after a long tpac. Unfortunate that DL gave up that region and you have to go through ICN and fly on KE to get there now.