Only someone from an IIM can provide you with better insight, and Educate Next's founders are from IIM Rohtak and FMS Delhi. Educate Next is, in my opinion, the best IPM - IIM coaching (Indore and Rohtak). The curriculum is written by the Directors themselves, and they provide full curriculum details to students when they enroll, making it clear how the approach will be. The best Personality Development and Verbal Ability classes in town.
Another critical point is that the batch size is too small, with a maximum of 20 students. This is extremely beneficial. It is also the most affordable in terms of fees for the quality provided. IMS is also good, but they charge nearly triple the price for the same quality.