One of my friends studied at Calcutta University, so I might be able to give you some details about it.

• Calcutta University (CU) is one of the oldest functioning institutions in West Bengal.
• It is popular among students.
• In Calcutta, most of the colleges are affiliated with CU.
• The one thing that every CU student is familiar with is their strict grading system.
• Scoring even a 60% is very difficult. Some students even think this is a good enough score if you are a student of CU.
• Nowadays top reputed MNCs also demand at least 60% to be able to sit for placements.

Finally, you should keep in mind that other mentioned universities may not be as old and experienced as CU, but they will show a bit of leniency while giving marks. So ultimately the decision is yours, whether you want to study in a reputed university with a strong and reliable alumni network or opt for the easier way out by getting admission to newer institutions.