Which college is better, CBIT, SRM or HITS (Hindustan University)?

I don't know much about CBIT and Hindustan University. But I won’t recommend you the NCR campus of SRM.

It is in fact not located in the National Capital Region. It is situated in Modinagar (Sikrikalan to be precise).The management of this college is very poor. You’ll be wasting a lot of energy for simple requests like getting statements attested, acquiring a recommendation letter, getting fee refunds, etc.

I studied CSE over there. The faculty for CSE is considered to be the best. However, in reality, most teachers don’t even have an idea of their specialization. You’ll find that the same teacher is taking classes for various specializations like Data Structures, Mobile Computing, Theory of Computation, Compiler, etc. New ideas aren’t encouraged in the classroom. 

The hardware in CSE labs is top notch, but the software is all outdated. The hostels are decent but the mess food is disappointing. The hostel wardens do minimum to maintain discipline. For placements, you’ll have to travel all the way to Chennai, with no support from the management, and no accommodation facilities. 

Thus, do not choose the NCR campus of SRM University, especially for the CSE program.