6 year DNB Neurosurgery course is really good enough. 6 year Neurosurgery course includes 1 year of learning basic general surgery techniques and 5 years of Neurosurgery. You will become a successful neurosurgeon if you work hard. Also the course fee is less compared to doing MS in a private college. 6 years DNB course has its own pros and cons. Neurosurgery is an ever demanding field with high payoffs. It's a life long learning process, be it three or six years you need to be exceptionally good throughout  your course.