MBA vs PhD

The first question should be what do yu want to do in your life? If you want to be an academic or a researcher of course you have to do a PhD. If you are planning to work in a firm, to be an excecutive or something relevant to this the best thing you have to do is to do an MBA. But, as far as I know, an MBA is much more expensive and it is needed to have 2 or 3 years of experience. So, unfortunatelly, it is not what you want, but wahat you can do.