It's possible that IIIT Delhi is superior to IIIT Allahabad because of its prime location and excellent faculty and placement statistics.

• IIIT Allahabad is also a National Institute of Importance, but IIIT Delhi is not.
• The coding culture isn't even close to being equivalent; IIIT-D is far superior.
• Professors at IIIT-D are generally PhDs from prominent universities throughout the world, therefore their experience and letters of recommendation are quite valuable.
• Another plus for Delhi is that the research climate is excellent, especially for undergraduates.
• Technically, neither has “100%” placements, but their placements are extremely similar overall—Delhi to Allahabad.
• The differential in tuition prices is the most compelling reason to pick IIIT Allahabad over IIIT Delhi.

For the time being, the positions are identical, although Delhi is considerably younger and already has similar placements. It also appears that the overall atmosphere in Delhi has improved.

For CS, DTU will be the better choice. Given below are the reasons for choosing DTU over the other institutes. 

The table below can show a brief overview of the institutions:

Advantages - DTU:

• The coding culture at DTU is very developed. Students from all the branches, be it CS or Engineering Physics believes that Coding is the ultimate future of engineering.
• DCECoders is the Codechef made by DTU students. It is the best place to learn coding on campus. 
• IEEE, ASME, CSI, and IET to smaller organizations put effort into the coding competition. From time to time, you will have coding competitions and classes on the campus.
• DTU has over 50 societies that need good coders. Where you can apply your coding knowledge to real-time work.
• Bening situated in the capital of the country, DTU offers good exposure and opportunities. Delhi-NCR is a hub for IT companies, you may be able to get a job in NCR.
• The institute has a rich legacy of over 75 years. It boasts of a strong alumni network. It has a brand value similar to that of old IITs.
• The campus is ragging free and seniors are quite helpful. The 85% Delhi quota at the institute brings affluent crowds of Delhi to the campus.
• The placement process is managed by talented students of the institute. The placement at the institute is great. Even though it is an engineering college the non-technical placement rate of the institute is impressive. 

Even if you realize after a few months of your course that engineering is not for you, you will still get to learn a lot from the campus culture.

If you're interested in IIITs ECE program, then you should probably think about other schools as well. If you are going to study ECE at IIIT, you should think again. There are advantages and disadvantages of studying at IIIT.

• The few Indian companies which work in the electronics domain have a hard time competing with foreign companies.
• There isn't much support for electronics businesses in India. Citizens rely on foreigners to supply the core.
• Due to a lack of education and training, most Indian consumers can't satisfactorily work with electronics.
• The electronics industry in India is growing, but it should continue to develop new talent for the future.

However, if you really want to become an expert in electronics, then by all means go for it but make sure to give your best to acquire knowledge and get a good score. People often find it hard to see the value of electronics, but if you've already decided to focus on it. Don't get distracted by college. Work hard in your field of study. Don't put too much emphasis on college.