Greetings sovit,

TIME institute is best for CAT coaching.

jamboree institute is best for GRE/GMAT coaching.

you can however join any institute that is the most convinient to you because ultimately it all depends on self study at the end.

try to save time by choosing a coaching centre nearest to you rathar than wasting time in travelling.

the methodology of teaching is more or less the same for all coaching centres.

career launcher, IMS are some other famous institutes.

hope this helps.

good luck.

Hey sovit,

For a long time T.I.M.E institute is giving a coaching for CAT exams for a long time and is helpful for many students. And the succes rate as per given by the institute is very good. So in my opinion you should get contact with the institute people.