MSc Managment with International Business at Birkbeck, UOL

I needed some advice on my postgraduate application. I have been accepted into three options:
MSc Managment with International Business at Birkbeck, University of London
MA International Business at Greenwich
MSc International Business and Managment at University of Westminster
Birkbeck don’t have a UK ranking but in terms of world rankings they range between 300-400, where as the other two are more like 800-1000.
What’s the reputation of Birkbeck ?? What option would you choose?? Thanks