It is entirely dependent on personal preferences. Candidates who have difficulties travelling might choose GATE online coaching.
MadeEasy, The GATE Academy, T.I.M.E., Pathfinder Academy Pvt Ltd are some of the reputed GATE coaching institutes in India.
Before joining any GATE coaching institute you can check the reviews, study materials they provide, test series and also the location to choose from the other institutes.
NPTEL is one of the best free options for GATE Online Coaching.
Candidates can improve their preparation by getting the right guidance. Moreover, they will be preparing in an environment where there is healthy competition amongst friends and peers.