This is purely a matter of personal taste. I have the brown top with the silver threads, but before I got it and after seeing pictures of the black moonlight top I was nervous it would be too shiny/sparkly. Seeing it in person, I love it.
I don't think the moonlight top photographs particularly well--it definitely has a shinier appearance in photos than in person.
The optimal thing is to see one in person and make your decision based on that.