Hi,

Well best is a relative term depending on what supports your needs. However, I would like to give a little information about each of these 3 coachings in Jaipur:

T.I.M.E :- The faculty at T.I.M.E jaipur is very good. This institute carries its Brand name and the study material provided by them is also good . The questions though are tougher than the actual CAT questions that might be a plus point for you if you are able to solve them in the Actual CAT exam. They regularly conduct the workshops, their AIMCAT test series are very popular which will help you to know your standing amongst the test takers plus the analysis of the mock tests will help you to indentify your weak and strong areas. T.I.M.E. will prepare you for a level one up as compared to CAT and you might feel confident and easy to perform in actual CAT

Career Launcher :- The faculty at CL jaipur is good , the study material provided by them is at par with the difficulty level of the actual CAT exam. Their workshops such as smart Quant Cracker are very beneficial for the students. I attended the SQC conducted by Gautam Puri sir founder of Career Launcher. 

IMS:- IMS provides nearly 30 Simcats with level of test varying from easy to difficult to medium in chronological order. IMS has materials which is limited and you need to hunt for other materials for practice. The level is medium of the IMS material. These materials have a drawback - You wont get analysis of what you practise i.e. Average time per question, Accuracy, Competence unless you start preparing your daily tracking sheet.

Hope this helps. All the best.