here's the list of coaching centres in indore for IIT JEE-
ALLEN Career Institute, Indore
CatalyseR – Newton’s Villa
Aakash Institute In Indore
Kalpvriksha Institute In Indore
in my opinion,ALLEN institutes are better, but it really depends on the faculty that the city has.
you can check out their success rates in the examinations before taking admission in the coaching centres.
also try to get advice from ex-students from the coachings
hope that helps