Hello Dear,
You have not mentioned that you are preparing for Engineering or medical examination. Every institute has different faculty member with different expertise. Gomati Nagar center is good for medical preparation well designed syllabus with qualified teachers. Regular test are conducted to help and review whatever course was covered.
Rest is depends on you how you prepare for the competitive examination. A Institute is as good as its students. Yes teachers plays a major role but its the students who delivers the result.
Good Luck
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