i have not got a satisfied answer for which of the b-school to choose whether fms bhu or mnnit allahabad yet....

FMS is best among all of them.

B-schools are compared on the basis of selection procedure, industry interface, strength of case studies and placement assistance. FMS BHU and MNNIT Allahabad both have these parameters in place and are reputed institutions. However, I will give FMS edge over MNNIT for its Summer placement efforts.