Which MBA Stream is best

All MBA specifications are good . Your choice should be based on Institute specialisation faculty, past placement record, Alumni Network, brand image etc. But major criterion should be your area of interest.

finance,marketing and IT is best.

None can be regarded as best. Its about your taste... If by best you mean money fetching then I will be a bit based towards marketing n finance . However, it highly depends from which university did you complete education

Finance and banking have more wider scope and best