I also disagree entirely with BEP’s post:Point on lost income – I don’t see this as relevant in the grand scheme of things.Point on experience – As great as the MBB experience is, the MBA will still help open some additional doors further down the road. You are absolutely not going to get jobs purely because of the MBA, but it may well be the entry ticket to an interview in some circumstances – job requirement, awareness, nepotism etc.Point on networks – I have an MBA from one of the schools that MBB types typically go to and so, speaking from experience, I disagree 100% on the networking value.Whether you are a career MBB consultant, or just plan a couple of years post-MBA, I would still go because you will enjoy it, because you will experience a lot, because you will have a great year and a great qualification, paid for by someone else.With respect to some of your other questions:“Will it add much tangible knowledge?” No it won’t, but that’s not what you’re going there for.“Will the MBA pale in comparison to more MBB experience?” In my view, this is not a valid comparison. What you should ask is “Am I more employable as an engagement manager with 6 years at MBB or as an engagement manager with 5 years at MBB and an INSEAD MBA?”“Would a lack of an MBA be a roadblock at progressing?” Unlikely once you are established within a company, but remember a big part of progressing in big corporates is playing the political game and being seen to have done and to continue to do the right things. Many many of your peers (read competitors) will have ticked the MBA box, why leave yourself at a disadvantage? Lots of small positive things collectively add up to one big positive thingWrt BEP’s point about doing something else – I half agree with this, but primarily in the context of becoming an absolute high-flier. If you are not sure that an MBA is right for you now (you have only ~two years’ experience, which is young for INSEAD, unless you are a PhD or something), you could consider spending a couple of years in an awesome industry job and then shoot for the stars with Harvard or Stanford. Just something to consider...Final point – The reason to go on full-time top MBAs is really not so much to learn, it is to facilitate a career change or career advancement, to have fun, to just take a year off to play sport and drink, to meet new people, to experience other cultures, to find out about other career paths, I could go on. So don’t focus at all on ROI or what you might learn in class, they are not so important. There is a reason why so many people, including your MBB peers, follow this path, and you are unlikely to be the exception to the rule. I can pretty much guarantee you will benefit from it at some point in the future, so just consider whether you would enjoy it or not. Sorry this got a bit long – I don’t have the time to edit