I agree with what have been said.
NH F is very good in the air (seat, service). Food wise the Japanese selections are excellent, the western sometimes lacking.
The NH F seat provides almost too much privacy with a high dividers between the middle pair. You need to bend forward to talk thru some small 'window' between the seat. Great when you are by yourself, not good when you travel with somebody.
The NH lounge is good, but at least one level below the LH offerings.
I would decide based on if the flight match my sleeping pattern and the total travel time.