My preference would be macro but that's because I enjoy it more.
Macro is more about economics on a national level. Unemployment, money supply, inflation, etc.
Micro is more about economics on a inidvidual or business level.
Both will address issues of supply and demand but the analysis is just on different levels.
I guess I would take both if you can, you will understand the concepts in each course better since they will be complimentary. I took macro first in college and then micro the next semester.