The preference order for the given colleges is IIIT Allahabad > BIT Mesra > VIT. In terms of placements, CSE is better than ECE. However, you should prefer the branch you are interested in. If you want to study CSE, BIT Mesra is a great choice. Many core CSE companies take part in campus placement. According to BIT Mesra placement highlights of recent years, the average CTC received by the CSE students is around INR 13 LPA.
I have information about BIT Mesra and IIIT Alahabad. As a few friends of mines go to these institutes. When it comes to reputation, IIIT Allahabad tops the race in any case. But what matters more is your interest. Since you will be studying it for the next four years.
Comparison:
Name of the college |
Fee |
Placement |
IIIT Allahabad |
INR 1.65 lakhs (first year) |
Average package of INR 12.50 LPA |
BIT Mesra |
INR 11.57 lakhs (Total) |
Average package of INR 10.64 LPA |
VIT Vellore |
INR 1.98 lakhs (per year) |
Average package of INR 6.50 LPA |
In factors like placements and ranking, IIIT Allahabad is much better than the other two colleges. I am not sure whether you should compare VIT with these two colleges.