Must choose RV College of Engineering due to (1)low population of students in college than VIT which give you better opportunity at the time of placement. and as per I know RV has (2)higher avg. package in CSE than VIT. And also (3)location of RV is way much better than VIT. And their is no strict rules in RV as VIT have some useless rules.
I prefer RV College of Engineering over VIT and any other private college (except BIT