Both options are extremely comfortable, nothing to choose between them there. Both are coming with me on the trip, just a case of which one gets worn one the flight. And one screams PREGNANT! and the other one keeps it very discrete.
Flying AA one way and BA the other (codeshare). I know it's hopeless to have any expectation of an upgrade, pregnant or not. More wondering about general attitudes/behaviour towards pregnant women and if anything more erring on the side of 'avoiding unnecessary hassle' rather than expecting the red-carpet treatment.