Should I upgrade to AIIMS Rishikesh in 2nd round after getting AIIMS Raipur in 1st?I will be appearing for USMLE so research is important but I really like Raipur especially because it's close to city

Both are AIIMS 2012 graduates and are roughly comparable. In terms of research, there are numerous opportunities at AIIMS Raipur. The academic section promotes research on a proactive basis. It has the same facilities and receives the same funding. Every batch has a few people studying for the USMLE.

AIIMS Raipur is only 10-15 minutes from the city center, and there is plenty of development all around it, including all the markets, shops, and restaurants you could want. It all depends on your preferences; if you want to be in and around a city, Raipur is the way to go. 

Rishikesh is a good option if you want to study in a natural and beautiful setting.

At the end of the day, both are excellent institutes that would give you a slight advantage in terms of brand value.