Nothing more than approval by relevant authorities. Once I use a different treshold than that, it becomes very difficult to fly at all.
I mean all else being equal (Two planes to London leaving at almost exactly the same time and exactly the same cost) then perhaps I'd prefer the A32X. But the point is all else isn't equal. It becomes a matter of how many hundred you want to spend to fly the Airbus. Or how many hours you want to spend at the airport waiting for the non-Max flight. And I'll happily take the MAX if it saves me 30 minutes or $20. And I'll take my family along too without hesitation.
I mean all else being equal (Two planes to London leaving at almost exactly the same time and exactly the same cost) then perhaps I'd prefer the A32X. But the point is all else isn't equal. It becomes a matter of how many hundred you want to spend to fly the Airbus. Or how many hours you want to spend at the airport waiting for the non-Max flight. And I'll happily take the MAX if it saves me 30 minutes or $20. And I'll take my family along too without hesitation.