5 trips on Lufthansa First class is probably the best in terms of value.
LUX-FRA-BOS on the 747-8i for 70k, in 2017 the good old days
IAD-MUC-BCN on the A340-600 (for 2) 100k each in 2023
MUC-FRA-BOS on the A340-600 (for 2) 100k each in 2023
Also a SYD-YVR-YYZ in J for something like 60 or 70k during covid.
This could have been my best redemption but Covid happened.