SD45 and Donner Pass?

Are these DLCs worth getting? I'm thinking about what to get myself for Christmas. 

https://railworksamerica.com/forum/
https://railworksamerica.com/forum/viewtopic.php?f=35&t=7200
Chacal wrote:Donner is really good now, but you have to like long runs. I prefer short routes with a lot of road switching, so I tend to fall asleep on Donner, Cajon, etc.
up_8677 wrote:One sweet motor; nice job on the recordings.![]()
Isn't DP supposed to have an espee Dash 9?