Is it worth making the decision of taking category 2 in Vellore or category 1 in Chennai for B.Tech CSE?

Depending upon your ranking you will be called for either phase 1 or phase 2 counselling and the category system start from the Phase 2 counselling. After all the seats in Phase 1 counselling ( 1 to 20000 rank ) are filled, phase 2 counselling starts. Some seats are left for each category with and i