I know people from both Bethune College and Vidyasagar College. According to what I heard from them, I will say the former is better. 

• Bethune is an all-girls college and it is quite strict. If you want good academics with regular classes then Bethune is the right choice.
• Vidyasagar has union problems too. At Bethune, you won’t have to face such problems as party politics doesn’t exist here. 
• The faculties and the ambiance of Bethune are great.
• The facilities offered at the college are good. Both the central and departmental libraries have a good collection of books.
• There are many extracurricular activities for you to participate in. 

These reasons make Bethune a better option for pursuing your course.