I joined mahendras and completed the three months course.
I have mixed feelings. the staff s good and helpful. The preparation duration and syllabus is satisfactory but in the end not at par with the current level of examination. exams are too difficult in comparison with level of thier syllabus.
Hence good to begin with and to learn basics but after that a lot if self study and other study material would be needed to bring up to the leel of final examinations.
Overall a place to start preparation from.