My question is, are supersonic planes worth it (for intercontinental routes). Considering they can do many more flights per day, but have higher costs. Also, which one is best, despite most people buying Concordes, the Tu-144D seems better to me.
Concorde (BAC)
Seats: 144, Speed: 1450, Range: 4439, Fuel: 6177 ($339m)
Tu-144 (Tupolev)
Tu-144: Seats: 126, Speed: 1240, Range: 1553, Fuel: 4922 ($190m)
Tu-144D: Seats: 156, Speed: 1320, Range: 4349, Fuel: 5875($328m)
Tu-144S: Seats: 140. Speed: 1347, Range: 4025, Fuel: 5650 ($299m)
Note: all of these planes take 96 days to build.