These two ratios bring together formats that airliner builders know well: the A320 and the Concorde belong here, and military subjects such as the Phantom turn up in the neighbouring 1:96. Dimensionally the group sits between collector-sized 1:144 and cabinet-filling 1:72, which puts a jetliner at a convenient 30 centimetres or so of length. That is long enough for a livery to look like a livery rather than a stripe, and short enough that two or three aircraft share a shelf without crowding.
This is a narrower slice of the catalogue than the mainstream scales. If you are assembling a fleet, a far wider choice of liveries waits among 1:144 aircraft kits and the larger 1:200 aircraft kits. Military types from every period are covered by the main aircraft model kits listing.