Here's a little comparison I did just north of Vancouver. The first image shows Default
scenery with 20m mesh. The second image adds UTX
Canada, and the third image adds XClass
landclass. In the final image you can see what Holger Sandmann's Vancouver+
looks like, which demonstrates that scenery based on geo data can't even come close to a hand built product like V+ or FTX. Even with FTX on the scene Vancouver+ is still my favorite localized area.
UTX doesn't even add all the rivers, and I can't understand why UTX always removes the snow caps from mountains. While XClass adds a great deal of landclass variety the data is very randomized and hardly accurate. Other than Vancouver+ the default scenery seems to be the most accurate. Vancouver+ simply looks amazing.