Hello There ,

JEE Advanced exam requires strong concepts and continuous assessments . To be fair it does not depend on which coaching you take , every coaching has good faculties , they teach almost the same thing ,it is upon you to practice and learn with full sincerity and devotion .

Since you are taking a drop , you will have even more time for your preparation , so i would suggest you to join whichever coaching is good in your city , talk to your seniors , ask for their opinion , and do not waste time for deciding , start preparing fast , and as for study material , almost every coaching has same study material , it depends on the choice of the additional books that you take and solve .

Hope it helps and feel free to Ask any questions .