As a Duke undergrad, could you actually go to UNC? or rather would it be safe to attend?
Congratulations! I find interesting that schools that have provided you with admits are in such close vicinity of you. Almost like you were destined to stay in the south.
Emory vs. Duke is the real choice I would guess. Nothing wrong with Fuqua and going to the same school for undergrad and bschool.
Emory is a smaller school where you will have about 150 classmates vs 450 at Duke. This matters to some but frankly, once you are past 50 people in the class, whether it is 100 or 500, i don't think it matters a whole lot.
Depending on whether you are still carrying your Duke student loans, the scholarship may be much more important and helpful - I would not want to graduate with 200K in debt and interest rates rising.
If you go to Emory, you are likely to stay in Atlanta. Duke carries more opportunities outside - if that is important to you (e.g. you want to get out). Also, no school is perfect -you will find stupidity and something you hate in both Fuqua and Emory. You are more likely to doubt your decision not to go Duke since money is replaceable and there is no way to change your decision.
With everything being as it is, if i were in an adventurous mood, I would pick Fuqua with some unknowns, better rankings, job prospects, classmates, and a change of scenery (well, to an extent since you have gone there, not really much of a change). If I were looking to focus in on something and esp. stay in Atlanta/South, and wanted to be a bit safer, Emory would be my pick.
I am voting for Emory since Duke is not big enough change in employment stats or experience for you to justify the $$ and the fact you already have access to the alums, etc.