I agree that difference is considerable in the beginning. But 3 year visa will require extra fees for prolongations which result in similar amounts after 5 years. Am I right?

Hello, I've got an offer from an employer for a long-term service. However, the employer asks me whether I will apply for 5-year visa OR 3 years visa plus further extension. Does anybody know pros and cons of both options? I understand that total costs are more or less same except they are upfront o...