My Christmas train was a Lionel 736 Berkshire freight set that got much running during the holidays and after. When my son came along and I passed it on to him, it got quite a workout on our current layout, the Great Northeastern Railway. Below is a link to a YouTube video of that same Berkshire pulling a 22 car train of refrigerator cars and box cars at night. My son Chris is at the throttle. https://www.youtube.com/watch?v=tBgaFmSSSbc.