If you are building a shortlist, think in course blocks rather than one generic “best college” list.
Arts, commerce and science: DU is the main value option because tuition is low and the academic reputation is strong. It is also the most realistic place for students who want many combinations of course and college.
Engineering and research: IIT Delhi is the flagship public option. It is the most expensive of the government choices listed here, so you should compare it against the return you expect from the specific branch, not against DU.
Social sciences and research: JNU is a major public option, especially if you want a research-heavy environment.
Professional and multi-disciplinary study: Jamia Millia Islamia is a strong name to keep on your CUET list because it gives another central-university route.
Medicine: AIIMS Delhi is the obvious medical target, but it is tied to NEET UG, not CUET.
The honest trade-off is simple: a lower-fee government seat can be the best deal, but only if the course matches your plan. A private university in Noida or Gurugram may charge more, yet it can make sense if you want a professional programme that fits your career goal better.