Hey lara!

Both the colleges that you have mentioned are equally good. If one is good in some point ,then the other is good in some other point. RG KAR medical college is better in terms of ranking and ratings . It is ranked 68th amongst the medical colleges of india. And in campus size and infrastructure , Sri venkateshwara medical college is better  . Fees of both the colleges are mostly same i.e. approx  50k.

The following links can help you :

https://www.careers360.com/colleges/sri-venkateswara-medical-college-tirupati

https://www.careers360.com/colleges/rg-kar-medical-college-and-hospital-kolkata

So , you can go for any of these two colleges.

Best wishes!