I guess this is a good topic for my first post... ;) Like with everyone, I've got different favourites for different eras, but in the end I think my overall favourites of all locomotives in the game is the Hudson. It can perform decently on both flat & grades, doesn't cost as much ro run as the contemporaries (Daylight and the light blue streamliner - can't remember the precise name right now), it's a steam engine* and it looks good :P. * = I've got a bad habit of clinging on to steam as long as possible, even if diesel would be more profitable... ::)