To begin with, let me tell you that XIMB offers MBA-BM whereas XAHR offers MBA-HRM. XAHR or Xaviers School of Human Resource Management was started after the immense success of the HRM program of XIMB.

Now coming to your question, the program you choose will be an important factor in shaping your career so it should be based on your inclinations. Get a clear idea of the various arenas and specializations of Management and the required skills. Both the courses deal with very important elements of Management but HRM specifically deals with the primary asset of any company, The employees.

BM offers an MBA in various fields like

• Finance
• Sales and Marketing
• Operations
• Consulting 
• General Management

Each of these specializations have its own pros and cons. For instance, if you are into number crunching, operation management, and market mapping, then BM is a good choice for you. You can get further details of the course on the official website. Analyze what course and why attracts you the most and make an informed decision. So only you can decide which course to take as this is a subjective question based solely on your personal preference.