Choosing between MGM indore (Mahatma gandhi memorial medical college) and PMCH (Patna medical college and hospital) for MBBS depends upon various factors some of which are:

MGM INDORE:

One of the oldest medical college in madhya Pradesh. It is known for its experienced faculty members. It is equipped with modern facilities and infrastructure.  Provides good clinical exposure due to high patients inflow.

PCMH

It has a significant history. Professors are experienced. Infrastructure may lack modernity as compared to newer colleges. Being in a densely populated region, it offers extensive clinical exposure due to a high patient load.

Actually both the colleges are well Reputed so the choice may depend on personal preferences like location, campus etc.