First of all three colleges are of same league
MIT is expensive compared to SRM & VIT
Talking of placement their are several factors we can compare with as all these colleges are similar kind
1. Placement percentage ( means number of students getting placed each year from each graduating batch )
SRM > VIT > MIT
2. Average Salary wise placement
MIT > VIT > SRM
3. Number of companies visiting the campus
SRM = VIT > MIT
4. Mass Recruiters offers
SRM = VIT > MIT