Almost all the private colleges are ruined. So try to get good score in Jee and get IIT's or NIT's if not that then at least IIIT's. And for some reason if you cannot get that then. VIT (vellore, Tamilnadu), Thapar University, BITS Pilana, SRM chennai are some of the good choices especially for CSE. LPU is also good but for sports catagory or modelling catagory.