I doubt that punters will care who makes the aircraft as long as they don't drop out of the sky, I think for a major European airline such as FR to order Chinese aircraft will be so aircraft attractive that they (FR) would get them for under 50% of the cost of the 737
It simple really FR must have a lower cost base than any one else and airframes are a huge expense,Ryanair have no choice they must go Chinese they will never get the same deal again from boeing