Based on my research, I will present some points to support the opinion that I will put by the end of my answer-

• Faculty- The faculty of IIIT Delhi is considered to be one of the best in India. The college offers top-quality classroom teaching. But even IIITB has good professors. 

• Curriculum- IIITD offers the most relevant and flexible curriculum for B.Tech CSE. They will teach you core CS from the first year itself. Even IIITB teaches core CS from the first year, but it started with iM.Tech quite recently, in 2017. IIITB doesn’t offer B.Tech courses. 

• Funding and perks- As IIIT Delhi is a state government-run institute, it gets funding and other perks.

• Infrastructure and Internet facilities- Being a new institute, IIIT Delhi has better infrastructure and Internet facilities. 

IIIT Bangalore is a better choice for an M.Tech CS, based on curriculum, placements, etc. But as far as UG studies are concerned, B.Tech CS at IIIT Delhi is better than iM.Tech CS at IIIT Bangalore.

We need to consider a number of factors before choosing one college from DTU, NSUT, IIIT Delhi, IIT Bangalore, IIIT Allahabad, and NITs. 

• Quality of education: In terms of academics, IIIT Delhi serves the best. The teachers are genuinely interested in teaching and encouraging students to research work. In DTU and NSUT students are expected to cope with the curriculum on their own.
• Campus life: DTU offers the best resources and campus life to its students followed by NSUT and IIIT Delhi
• Peer group: You will find the best peer group that is passionate about CS at IIIT Delhi and NSUT. 
• Placements: This aspect is quite arguable because there is the general scenario as well as the statistics to consider. Generally, DTU fares better than NSUT and IIIT Delhi but if you look at the statistics, IIIT Delhi is the best among these colleges followed by NSUT and DTU. 
• Brand Name and Alumni: In this aspect, DTU is the clear winner. 
• Research Culture : IIIT Delhi has more faculty that are inclined towards research. The overall ambiance is conducive to cutting-edge research and students have to do research as a part of the curriculum. IIIT Delhi is followed by NSUT and DTU. 
• Higher Studies: IIIT Delhi has a CGPA system while NSUT and DTU have a percentage system. A CGPA of 8.75-9 is considered pretty good while even a percentage of 79% is not. So IIIT Delhi students face a certain advantage during shortlisting. Additionally, their research work and skills add to their overall profile and increase their chances of admission to top universities.

Overall, the best option for you is IIIT Delhi considering the above aspects.

One simple yet concrete reason to choose IIIT Delhi over DTU or NSIT is the quality of education it offers. IIIT Delhi is known to have some of the most highly experienced faculty, top-notch infrastructure, and a well-updated curriculum. Many students from other colleges, even IITs, often come to IIIT Delhi for internships. 

As far as placements are concerned, one must understand that getting a job after 4 years is important but not more than a successful long-term career. That being said, the quality of education affects your long-term career largely. You may or may not get placed in a big MNC if you join IIIT Delhi, but in the long run, you will certainly become successful. Also, the statistics show that NSIT has better placements than IIIT Delhi but in reality, these figures are inflated because of one or two international packages.

So, it’s best to focus only on the quality of education, and you will see how a long-term successful career unfolds itself before you.

My brother was in a similar dilemma when he got CS in Manipal as well as IIIT Delhi. After consulting a few friends at Manipal, he decided to go for IIIT Delhi. He stated the following reasons for choosing IIIT Delhi over MIT Manipal.

1. Selection Criteria : Manipal selection criteria a relatively easier selection criteria than the JEE Main + CBSE criteria IIITD uses. There isn't any kind of negative marking and focus is given to the English language. Thus, the crowd may not be as talented and intellectual as IIIT Delhi.
2. CSE : I wouldn't be exaggerating if I said IIIT Delhis CSE program is at par with the IITs. The faculty is highly qualified and the curriculum is very dynamic. The first year is branch-specific and does not have common subjects.
3. Higher Studies : IIIT Delhi students are exposed to some of the best research and projects. The faculty's Letter of recommendation can help shape your career for the better.
4. Placements : IIIT Delhi does not have mass recruiters and very limited non-tech companies. The overall placement stats are excellent.

If you want laid-back academics with a vibrant campus life, your choice should be Manipal whereas if you want a rigorous curriculum, then go for IIIT Delhi. It’s just a question of what your priorities are.

As a student of DTU, I can tell you about its campus. Once you enter DTU, you will be mesmerized by its beauty. It has a lush green campus with beautiful blossoms. Apart from the natural beauty of this place, the classrooms, labs, canteen area, and shops are in good condition as well. During the rainy season, the surroundings become even more captivating. Students try quite hard to get admission into DTU and NSUT Delhi because of their amazing campus life. My friend tried really hard to get admission into DTU.

Thus, DTU has a beautiful vibrant campus and its students share a common opinion in this respect. NSUT Delhi and IIITD are good colleges as well. You should talk to their alumni to find out more about them.

I am a student of DTU. Regardless, I’ll draw an unbiased comparison between these two colleges-

• Faculty- IIIT Delhi has the best faculty among all the engineering colleges in JAC Delhi.

• Research- IIITD is more research-oriented. If you aim for a career in research, go to this college.

• Curriculum- IIIT Delhi has a better curriculum, but academic pressure is way higher over there.

• Fee- DTU is much more affordable. But if you secure a scholarship at IIITD, things will get much better.

• Fests and college life- DTU is superior in this respect. It has better fests and college life.

Both the colleges are really good. Choose IIIT Delhi if you want to focus solely on academics. But for a more balanced college life, choose DTU. 

Both the colleges will offer you ample resources. It is up to you to make the most of those opportunities.

Colleges like NSUT and MNNIT Allahabad have a legacy built over many years. IIIT Delhi will take some time to catch up to the reputation of these colleges.

Regardless, I have tried to rank the three on several parameters, for their CS (CoE) program-

• Coding Culture- NSUT has the best coding culture, followed by MNNIT.

• Curriculum- IIITD has the best curriculum, followed by MNNIT.

• Research and Higher Studies- IIITD offers the best research prospects, followed by NSUT.

• Fests and Clubs- NSUT offers the best fests and clubs, followed by IIITD.

• Infrastructure and facilities- NSUT has the best infrastructure among the three, while MNNIT lags far behind the other two.

• Peer performance- NSUT has the best peer performance, followed by IIITD.

• Faculty-IIITD has the best faculty, while MNNIT and NSUT are at par.

• Alumni Network- MNNIT has a slightly better alumni network than NSUT, while IIITD lags far behind the other two.

Regardless of whichever college you choose for your CS (CoE), your success will come from your own efforts. By studying diligently and polishing your skills, you will land a well paying job, regardless of your graduation college.