If you want to work in management consulting then INSEAD is hands down your best choice. These firms are pretty global and you can always change between offices after 1yr (even during recruiting it is possible). If you want to do finance and in London then might be better but not much advantage in rest of europe. Stern is a great program but might be a little to biased towards finance in US.
I feel you need to get more clear on your goals. One of the key requirements to succeed at bschools is in general knowing where you want to go and admission officers always mention this that those who have a decent plan of where they want to end will do better. I know few frnds in top tier schools in US who are suffering because of lack of focus.
INSEAD has a very strong brand name in MBB.
INSEAD: Best bet for Management consulting
LBS: best bet for finance in London
Stern: finance in US
disclaimer: I work in MBB and have been admitted to INSEAD (and few other US schools).