I like that big pointy hill in the first one. That loos like a cool place to climb up and get a nice view all around.
With SLR lenses you can use graduated neutral density filters to hep balance the brightness of the sky and the land. There are even some just for sunsets and sunrises that are darkest in the middle and get lighter toward the top and bottom.
All in all nice work. Compact digital cameras have trouble with sunrises and sunsets anyway, and I think you're at the limit of your equipment with this subject matter.