If I was in your place, I would have gone for NMIMS. Operation profiles are usually offered in these 3 industries.

• FMCG
• E-commerce
• Consulting

Comparing these industries, you will find NMIMS as the best option. There are many big companies from these industries that visit NMIMS like 

1. FMCG: ITC , Dabur, HUL, Marico, Asian Paints, Pidilite, Kelloggs, Loreal, HCCB, Britannia, Perfetti.
2. Most of these companies do not visit XIMB and even if they do the roles offered are average.
3. E-Commerce: Flipkart, Amazon, Shopclues, Girnarsoft(Car Dekho), Bluestone. None of these visited XIMB.
4. Finance: Goldman Sachs, Nomura, JP Morgan, ICICI Bank
5. IT: Microsoft, Google, SAP, Cisco, National Instruments
6. Conglomerates: GE, Mahindra, etc.

All in all, the top recruiters combined with locational advantage, industry relations, and broad career prospects make NMIMS the better option of the two.