I hate to start any kind of discussion that could go wrong. I am on the fence over my next scratch build in G scale. I have drawings of the ES44 and figured that would be my next attempt originally. I have the MTH Dash 8s and want to expand the modern power fleet! I still haven't finished my SD70ACe or the MP15AC. I just want to start something else while the weather is warm to utilize my outside shop power tools. It takes me a long time to build something!
I had planned to attempt a CR SD80MAC. I just got one in O scale too. It was suggested that I attempt several other locos. One that appealed to me is the AC6000 or even the AC4400. I narrowed that to the AC6000 really because I like the looks of the massive tail radiator section. I even came across a great picture of the top for helping with the building. I was so into the planning and research, I forgot about the Cadillac.
Worse of all is I had to redo my computer and lost all my research. I had a fantastic site about Conrail's full fleet.
So I guess I may do them both someday but I need to decide. I really can't so what would you build first???