For me, it lies somewhere between the jet in the first movie and the truck in the last one. If we are speaking toy wise alone; I would have to go with the truck from DOTM. I'm sorry guys but a giant head sticking out in alt. mode just doesn't scream ALTERNATE mode to me. The explanation about megatron being a bold leader that does not care for disguises is just bullocks to me, and an excuse for poor toy design. If we are speaking solely on concept and screen animation, my favourite is the cybertronian jet. I just love the fact, that watching megatron in robot mode in TF1, you have no idea what he transforms into. The wings are nicely tucked into his back, and the nose cone is well disguised along his spinal cord. And unlike the toy, when megatron transforms in the first movie, the jet has excellent wingspan, no kibble and looks quite light and aerodynamic. If only the toy matched this I would be very happy.