Wether to do MBS of first gets a good work experience is a question that always keeps us in dilemma. What I can convince you that so one can give a perfect answer for this question. The best and the close answer to this question is it depends on you work profile. I you are into export-import then a PGD in that field is must before you start. But if you are a IT Professional then stick on for 5 to 6 years and then do MBA.