I don't have any knowledge of big ships :DWell, as a money maker I'd suggest do wait for the Beerfarer (i.e. anniVERSEary sale). She has a huge cargo haul plus this fuel refinery mechanic and costs only a few bucks more compared to the Aquila. That said, I would not recommend to use the Aquila as a trade runner because of her minor ability to defend herself. Just sayin...
When I compare the Starfarer vs the Aquila, then I would say: Aquila is faster and more manoeuvrable, but can't transport allot cargo. If I want a transporter for high risk / valuable goods, then I must take the Tali (with front and rear cargo module) and muster a full crew, which means high profit or it isn't profitable.