Hello, 

Congratulations for securing a seat in JEE ADVANCED.

This is according to my opinion and experience.

First of all academics are important.I’d say all the IIT’s you mentioned are awesome. if you want order. IITM>IITKGP>IITK>IITR.

Placements-IITM>IITKGP>IITK>IITR. placements totally depend on you and what you do in institute because most of the companies visit all the IIT’s.

Brand value and alumni - IITM>IITK>IITKGP>IITR.

Scope- it totally depends on the departments in the institute.you can go in any way you want. there are many people who joined CS and ended up doing DDP in Bio-tech. IITKGP>IITM>IITK>IITR.

proximity to Metropolitan city - IITM>IITK>IITKGP>IITR.

hostel life is worst in all iits so you dont have to worry about it.

Area(acres)- IITKGP(2100)>IITK(1000)>IITM(620)>IITR(325)

Weather- IITK>IITR(cold)>IITKGP>IITM(too hot).

Ranking of 2016 - IITM>IITKGP>IITK>IITR.

overall - IITM>IITK>IITKGP>IITR.

according to me if you can take heat IITM is the best because chennai has many industries.Strict attendance makes you go to all classes.Good overall experience because of saarang, shaastra, tech clubs, cultural clubs etc. IITM also has CFI where students do all kind of stud stuff.

All the best :).