I like both but prefer the steamer engines. One reason is I just like the working and action of all those wheels and drive gear moving.
My steamers seem to stay on the tracks better and I find them much easier to put back on the track than diesels. I also like the actions that steamers require like adding coal and water to the coal tender and the operating actions like operating a coaling station and water towers versus just fueling a diesel.
Granted the diesel engines are often more colorfully painted but steamers also can be painted in colorful schemes.
The steamers also represent most of the trains of my favorite period if the great train era, the 1940s and early 1950s.
Which do you like the best, steamers or diesels and why?
Charlie