Which is the best IIM to pursue PGDM?

All IIMs are the best but still, if you want to have a comparison, then I think, instead of going to one site, you should check all the IIMs which offer PGDM because their site is the only thing where you are getting genuine information on which you can rely on and easily get contact to.

Hi, You can refer the below link for ranking of colleges and based on that you can decide: https://www.shiksha.com/mba/ranking/top-mba-colleges-in-india/2-2-0-0-0.