What are the best New Delhi coaching centers ?

A friend from another forum asked me to post this question for him:

I am preparing for MSc and Integrated PhD (in physics) entrance examinations in India using self study materials. I wish to join a good entrance coaching center since there is huge competition. My research tells me that the best coaching centers for physics are in New Delhi. From my research online and asking my contacts in Delhi, I have come up with four coaching centers as shown below:

1. Physics by Fiziks
2. Career Endeavour
3. UGC Point
4. Aryan Classes

Is there anyone in this forum who has studied in these coaching centers or knows something about these centers? The following are the tests I wish to take:

• Delhi University entrance
• IIT-JAM
• Pune University entrance
• INAT
• JEST
• Any other MSc entrance.