"My goal is either top consultant or SVP global strategy"
I'm curious, whats your motivation for wanting the executive slot; money, perks, title, other? From my experiences those in top mgt slots have to sign their life away to the company. Yea you might make 1/2 a million a year but no time to enjoy it.
And from my experiences, the MBA won't help getting a SVP slot. Those positions goes to those who network and politic heavily within the organization.
I say go for the MBA if you want the top consultant. It will give you some street creed to correlate your experience.