one question in an MBB interview (Internship) I found hard to answer was, why didn't you join company XY (former employer - Big 4), why join us now for an internship? (I have only done internships at Big 4 firms). Actually, the company I worked for is not bad (and I enjoyed the time there as well), but I would like to work multi-perspectively and I can only do that at a management consultancy. That was my answer to that. He did not agree with the answer and expected something else. My question would be, what is the best way to answer such a question. He also asked, what did I enjoyed there and what not? So I was a little bit confused by this type of questions.