Odd that MBB rejected you for the Biochem degree - they are not subject specific for undergrad hires.Why apply to an operational consulting firm at all? ZS and ADL are very different to the likes of Proudfoot, Celerant etc., and unless you are talking about one of a small handful of operational firms ZS and ADL are in a different league - certainly vrs the likes of Proudfoot and Celerant (ATK being one of the honourable exceptions in this category). If you want to remain in strat stay there and decline this offer - you will find it very hard, if not impossible, to move back to strat if you move into ops cons and decide its not for you.Exits from ops are not really different that strat, although tend to be ops directed as you can imagine - senior roles in ops, scm, procurement etc as opposed to strat, marketing etc. You don't seem sure of what you want, I suggest taking some time to think it through, and Casio is quite right too: bigger is not always better.