I think BW - it ads some drama to scene and wow effect :)
However, in my opinion - first photo can be amazing, not just very good, with minor post processing. By adding graduated darkening filter in the sky and another one in the green field before forest, you can lead view to mountains and forest as main subject. It will add more drama to photo and make it more Ansel Adams style. If you never heard of Ansel - google him and his photos, since his amazing style of landscape photography is still role model for thousands of landscape photographers.
Best regards and keep a good work!
Thanks for your comment!