Compare IIM A and FMS.

Even though FMS is one of the top B Schools, IIM A is better any day, and ideally there should be no comparison between IIM A and FMS.
However, it should be noted that, while there are many people who choose IIM A over FMS, there are 8–10 people every year who choose FMS over IIM A. The only reason being FMS’ ROI (return on investment). I doubt there is any B-School worldwide, which charges you $625 (Rs. 42000) as tuition fee and gives you an average placement of above $30,000 (Rs. 20 lakhs) on an ongoing basis year after year.
Having said all that, given a choice, I think one should choose IIM A over FMS blindly. IIM A’s brand name, pedagogy and peer network would be more helpful in the long run than saving a few thousand dollars on tuition fee.