Hello Kandacharam,

I would like to say that, in any institute you may study, because every institutes have their own way of teaching, this is my view about institutes but if you want to know that which is better, then you should ask the individuals who is or who was studying in that institute.
You should focus on yourself and your preparation then you will prepare well for the examination.

Thanks for query on this platform, you may visit again

All the best for your examination.

FIITJEE is the biggest brands for Coaching for IIT, You can trust it and If you follow their study material then You can qualify JEE exams, I personally find AITS very useful they are more or less the same as the question paper of JEE advanced, You can go for it if you want quality education and assure Your selection.