Only considering the career scope and prospects as well as Average Salary of Graduates and Post Graduates of the above courses, my personal preference would be

#Science Background

1 MBA ( IIM, XLRI,IIT, FMS, Etc. TOP 25 NIRF Schools)

2 MTech/ME ( Top 10 IITs, BITS Pilani, Top 20 NIRF)

3 MTech ( Top 50 NIRF Institutes, Only if background      is of Circuital/CS/EC/EE)

3 MBA (Other Top 60 NIRF Management Schools)

4 ME/M.Sc./Mtech

#Commerce Background

It depends if you are interested in preparing for CA/CS/PO Examination, M.Com might be a better option for you, otherwise after B.Com, considering better career scope and prospects in the private management and finance sector MBA is a good option.