I would say that unless you can see a clearly defined career path, and have an absolute idea about what kind of brand management role you want to end up in, that either a general MBA or an MBA with a focus in marketing would be more relevant.
Certainly, there are aspects of brand management that justify a deep dive - but the core principles (positioning, design, valuation, etc.) can all be addressed through a more general coverage in marketing.
For the specifics, you could always opt for short brand management focused executive education courses at some point.
I would say that unless you can see a clearly defined career path, and have an absolute idea about what kind of brand management role you want to end up in, that either a general MBA or an MBA with a focus in marketing would be more relevant.
Certainly, there are aspects of brand management that justify a deep dive - but the core principles (positioning, design, valuation, etc.) can all be addressed through a more general coverage in marketing.
For the specifics, you could always opt for short brand management focused executive education courses at some point.