Hello,
I am an Indian guy with 12 years of Consulting and Project Management experience in IT. I have secured confirmation form WHU, HHL and MBS. My post MBA goal is:
1. Shift to management consulting (if possible)
2. Continue in technology consulting and get into program management roles
Also I am interested to work in Germany after MBA. My German is A1 at present and by the time to join the program I intend to be A2.

Would you be able to advise which one will be better for in terms of my future goals? Along with the scholarships and discounts MBS, WHU and HHL - schools are expensive in that order.

HHL is the better option because of the longer format. I dont see how you can be fluent in German at the end of a one year course taught in English.