Verbal | Study Material/Course for verbal ?

In my third attempt of GMAT I scored V34, an improvement of four points from my first attempt of v30
During this attempt I primarily worked on my concepts through e-GMAT's online verbal course.

For my next GMAT attempt, should I go through the e-GMAT course again or try new material online? Kindly suggest which coaching institute has the course which will help me in improving my verbal score from V34 to V40.

Any help will be appreciated?

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