Greetings!

Both of the college IIT Delhi and NSUT are consider to be among best college for engineering. But IIT Delhi will be consider best in terms of placement and college life. It totally depends on your area of interest whether interested in CS or civil engineering. If you have not decided any branch till yet then you should prefer IIT Delhi and pursue civil engineering from there only . You will get good exposure from their. Also if you perform good at college then you will get a good placement from there . But if your area of interest is CS then I would suggest NSUT only. Its placement facility is also excellent .many MNCs like Microsoft, Amazon come here with good offers.If you are further going to prepare for any competitive exam then you should know before hand that in NSUT ,you will have to satisfy 75% attendance criteria.

All the best!