Dear Aspirant,

For an exam like JEE no coaching institute is sufficient if you are not consistent yourself. If you are not attending the classes then no coachings will be good, so I suggest any coaching that you'll join, be regular.

Given you are going yo be serious enough, the following order must be good for you:

1. Sri Chaitanya
2. Aakash Institute
3. ALLEN( I don't recommend ALLEN Chandigarh though, but ALLEN Kota is best)

Hope this helps. Thank you.