I have done my iit jee preparation from bansal classes merrut branch. Quality of faculty and their concepts may from branch to branch wise. So here I will give you my overall experience at the bansal classes Meerut.
I will tell you from the starting, in the 2014 boards I have not achieved that much good nd my jee score was also low only 52. As I am from open category. You r rite
I decided to take a year drop
Initially I have not much idea which coaching I should join, as my friend joined bansal. You r rite
I took the admission paid approximately 60k for 2015 batch. They basically divide you on the basis of your exam preferences ie jee or jee plus advance. I only go for jee my batch my legend and theirs was sterling. They have common faculty of maths and physics for both legend and sterling. I personally like the maths faculty the most as he was very kind to each and every guy. You can ask as my number of times, his way of teaching was excellent, you will never get bored during your maths class thats my gurentee. Each faculty takes the 2 to 3 lecture, for each pcm. Generally classes starts from 9 and end at 5. I don't like the physics faculty, physics sir was always in a hurry to complete syllabus. Whether you are understanding or not he don't give a fu#k. Chemistry faculty was also good his method of teaching was also excellent.
CONCLUSION
Maths faculty outstanding Gautam sir
Physics Tammana sir and I don't remember the name of other one not that much good
Chemistry faculty Atul sir way of teaching was excellent
Only maths and chemistry was good when I was there
If you have any queries ask me