Verbal Prep - Advice/help

[hardikrs]

Hello,
I need recommendation(s) on books I should have/buy for verbal --
Just to give you breif overview of where I am.
Before I started my GMAT prep, I gave a diagnostic test 6 weeks ago and scored 485. Did very badly on verbal as English is my 2nd language.
Diagnostic test --- 20% correct in SC and 40% in CR
After that, I started with Manhattan to learn the concepts and practiced OG 10/OG 11
OG 10 -- 55% correct on SC
OG 11 -- 75% correct on SC
OG 11 --- 85% correct on CR
Is this real improvement, or the questions in OG are not very difficult? I felt that the diagnostic test had lot harder questions that OG and also OG 10 was harder than OG 11.
But I also think that I am better with idioms, and basic grammer now after reviewing Manhattan and that is part of the reason why I am doing better, but to go from 20% to 55/75% on SC and 40% to 85% seems little steep and I have serious doubts on the difficulty level of OG questions.
ANY OTHER BOOKS WITH MORE DIFFICULT VERBAL QUESTIONS?
I KNOW IT IS A VERY LONG MESSAGE, BUT I REALLY SOME HELP/ADVICE.
Thanks,
Hardee

[dgupta13oct]

For verbal kaplan is good

[Project700Plus]

If you used MGMAT SC guide, I am not surprised that you improved so much. That book is good.

Also, remember, the more practice you do, the better you get. I assume you took the diagnostic test without any practice, so naturally, you should show some improvement.

Have you tried taking GMAT Prep tests? Those could provide good measure, but some of the questions are the same as those found in the OGs.

[eflect]

Thanks for sharing these important bits of information.