KMC Manipal has an excellent crowd contrary to the general perception. Here, you need brains and not money to get admission. The admissions are based on merits so the quality of the crowd is not compromised at all. Only about 10% of the batch are NEI students or those with Indian ethnicity but are not citizens of this country WHO had to pay to get their seats. There are no management seats at all. The truth is that the number of meritorious students in government colleges is actually less because they have reservations for backward classes while private colleges do not.
So, go for KMC Manipal!
AIIMS Rishikesh, Raipur or Patna all are well reputed institutes and should not be underestimated. They are institutes of national importance and autonomous institutes of central government.
The infrastructure of AIIMS Raipur is better than most state medical colleges of India. The only disadvantage is that you won't be able to get a 50% state quota in NEET PG.
The core points of these institutes are:
Infrastructure
Faculty
Facilities
Fees
AIIMS title
Small batch size facilitates better teaching
So yes, it’s worth taking admission at AIIMS Raipur or Patna for MBBS.