I like the one on the right better overall, but not because of the forest, if that makes sense. It's the rivers.

The left looks better by a bit for the forest itself, but the rivers look like they're sitting on top of it. On the right, the rivers look more inset, which I tend to like better. I also like the darker green.

However, if you beveled the rivers a little bit, I'd probably switch my opinion to the left, because the texture is indeed nice.