I think at first, we'll see planes like Pilatus planes and AN-14s being high in demand because they are very cheap, then if it goes at a stedy rate, we might see planes like DHC-6-300s being popular. After that, I think it might branch into diffent things, the F-27 and AN-24 will be pretty popular and I expect more F-27s to be made, but also the AN-24 being close. After that, I think most airlines will be aiming for 737s, 727s and DC-9s with a chance that the Tu-154 might be pretty popular too if the numbers are good enough when it's introduced. After that I think we might see the IL-62 (range) and 747 (range and capacity), the DC-10 and L1011 might also be popular choices but just like with the Tu-154, we'll have to wait until it is introduced..