I have got IT at vit vellore, and I am expecting 1700 in comedk, at which I could get BMS, Ramaiah CS. So suggest which is the better option?

Hands down BMS or Ramaiah CS, dude. VIT has over a 1000 CS seats. Add to that 150 seats of CS with Bioinformatics and however many seats are there for IT. How can you expect even being noticed when your department strength is almost 2000 in a college in the middle of nowhere? BMS and Ramiah might not be tier 1 colleges but they’re located in the Silicon Valley of India. You’ll have abundant opportunities with a much smaller batch size and a large number of excellent companies visiting. Besides, Bangalore over Vellore anyday, coming from a guy who got VIT CSE three years ago.