Hello folks.
First of all, thank you very much for your answers and sorry that I am only now reacting to them. On the one hand, I hadn't received an email notification after Tony's first reply and, on the other hand, I had now rummaged through the Rocky Mountain DLC myself to understand what was being offered to me as a buyer.
Since I think that one or the other might ask the question, like me, which Rocky Mountains DLC should I buy, I'll write my information here.
There are currently, Jan 2022, a total of 7 DLC. In order from West (Revelstoke) to East (Cochrane)
1-> Viktor Lake to Ross Peak and Glacier
2-> Rogers Pass
3-> Columbia River Basin
4-> Golden, BC
5-> Beavermouth to Ottertail
6-> Ottertail to Castle Jct
7-> Baker Crk to West of Calgary
The "problem" are the three in the middle 3, 4, 5, which are offered with the same / similar map content.
3-> Columbia River Basin + 4-> Golden, BC are completely the same and only differ in the tasks or, in 4-> Golden, BC in the enclosed Rocky Mountaineer tourist train. At 5-> Beavermouth to Ottertail, the route was extended a little west to Beavermouth and a little longer east to Ottertail. As I understand it, 3-> Columbia River Basin and 5-> Beavermouth to Ottertail also have different roles.
I had already noticed this before I wrote the post here in the forum. Since I only now, yes I know I'm late, switched from TANE to TRS19 and bought the TRS19 - North American Edition, I already owned 4-> Golden, BC and wanted a double purchase or a similar route avoid, but I wasn't sure if I understood the English text correctly. In addition, with the TS from DTG (I own more than 480 DLC), I am used to the fact that with Route Extension you always need the first, original route, and with N3V Trainz I had no experience with it.
I don't want to discuss the sense or nonsense of double offers, it is the way it is and there is what the developer offers for sale, the purchase decision rests with the buyer.
The statement that 3-> Columbia River Basin + 5-> Beavermouth to Ottertail are different routes can in my opinion not be seen that way, but everyone has a different focus on the matter.
After all this was clear to me and I understood it and then found your answers here, I started to take a closer look at the other Rocky Mountains routes and see what content I get there. In the end I decided to go to the 7-> Baker Crk to West of Calgary. This route is exceptionally long and also offers a different landscape than Golden, BC. I think this is the longest route I've seen for a railroad game. There are also opportunities for industry. However, only two tasks are offered. An automatic and a dispatcher version + a QD. For me its OK.
I will shortly be making a video of the route, where I drive the route completely. I didn't find that many videos about Trainz Rocky Mountains on YT.
I thank you for your attention and stay healthy in these times.
best regards from Hamburg / Germany