I agree, thinking beyond the course is important. Maybe think about where you want to live, the kind of organisation you'd like to work for, and the kind of role you'd like to do. That might help you to decide which course would be most likely to lead to that kind of work. It doesn't matter if you aren't exactly sure at the moment, or if you change your mind later - but if you have no idea at all you are more likely to end up regretting your choice, I think.