Pilots have been saying this for a long time. But it started with anger towards the constant expansion of the 737 (the 900 has some additional limits that hit h

Pilots have been saying this for a long time. But it started with anger towards the constant expansion of the 737 (the 900 has some additional limits that hit hard when icing conditions in some places like Denver). The 757 was the sports car of airliners but with a high price tag (and it never really displaced the 727). As for the A321...it had a rocky start.