One year or 2 year MBA

Hi,

Though I have posted this query in other forum too, I wish to get your advice.

I am an MBA in marketing from one of the top 10 colleges of India and have 6 years of work experience.

I did industrial sales for 1 year, and have worked in the biggest private bank of the country for 4 years. out of which first 2.5 years were in retail (marketing) and rest 1.5 years in Corporate banking (Finance)

At present, I am working with the largest bank of Oman (middle east), my first international assignment and looking after corporate banking.

I learned finance while working in Bank and now want to change my career to IB.

Suggest me whether I should go for 1 year MBA-finance or 2 year MBA-finance. with IB focus.

regards,

Amardeep