CLAT is one the most demanding course these days among students. Since CBSE has introduced a course named legal studies, law as a profession is in boon.

As far as we talk about best coaching, being a lawyer i see any student must prepare for at least 1 year (weekends) for better concept clarity. Though there are lot many coaching centers in the town like Success Mantra - Nirman Vihar, IMS, Career launcher, mansarovar etc etc.

But in my recommendation east delhi institues are much better as there are small batches and student recieves individual attention from the faculty like Success Mantra, Nirman Vihar has tremendous pool of faculty and consistent results.

Hope this helps!