I think that the problem with "Flightline" is not the presenters it's the fact that they have been repeated to death!. You would have thought with every aspect of aviation today beeing fillmed there would be enough "Footage" to do a different "Flightline" every day!.
The same goes with "Discovery Wings" the same old stuff over and over and over again!
As for Mr O'B, never met the bloke but his enthusiasm for aviation shows through. I would rather have an enthusiastic, larger than life charecter presenting the programm than a dull voice over or a professional T.V. presenter.
Rgds Dr.I.