The admission in the BSc radiology will be based on the merit rank and the marks obtained in class 12. You simply need to register online for the online counselling and based on your merit you can get the seat in onr of the colleges mentioned above. Also there is no one criteria based on which the college can be rated. So the institutes are best in various manner and you will get the one based on your merit. And if you want to prefer the institute then prefer BVP Pune as it is a well known and well established institute in the field of education.