I like the mountain styles on both your pics. The first kind may be 'simple' but they look very attractive and would work well with a certain style of map. I also love the contrast with the dark, dark water. I'd love to see the full map and hope you post it one of these days! The line art on the second style is very good, but maybe they could benefit from a little more shading to highlight the dark and light areas? Just a thought.