So here goes my story:
I am in business development now in an advertising agency, have a communication/marketing background, want to broaden my profile and get eventually to general management through the path of business development just in a bigger, more international company preferably in sports industry (can be retail, can be events management or other part of the industry) or luxury where my marketing background would be an advantage. I will in both cases anyway need to fight hard for jobs as it is not a mainstream MBA goal, but these companies still tend to ask for and recruit MBAs.
I just turned 32 so to get out of the school faster would be an advantage. On the other hand taking a year or 1,5 years off is better to get the most out of it and that speaks for a longer program (LBS). But maybe that is just my impression and 10 months + internship is enough?
My weakness is finance (or not much experience in this field), I think that longer time for mastering business fundamentals + LBS strong finance reputation will help my CV in the long term.
I don't have any huge love for London so I can't say LBS motivates me location wise, I can imagine myself working in France easier, but my aim is international career and mobility possibilities within it so the starting place doesn't matter so much - it is more the company and the career that plays the biggest role. So one point goes for INSEAD on this one -diversity and int. network.
Also INSEAD and Singapore campus allows to have a least a look at the Asian market that definitely interests me, but not sure 4 months in this campus is enough to make any lasting impressions or connections.
Cost wise - LBS is more expensive reg. tuition AND it lasts longer AND London is just generally more expensive than Fontainebleu and even Singapore so the main question remains - is longer program really giving more?
In non traditional MBA fields LBS is more recognized, but that is subjective impression I have.
I have a feeling that with my profile (non consultant or finance that just wants to continue where she/he was in a higher level) the answer should still be LBS, but not taken the final decision yet.