HI Guys,
I can relate to all of you so thought that I will share my inputs. I have taken GMAT thrice. and after all the time and money wasted on a number of test prep during my first two attempts(650 and 660) attributable to my Verbal scores, I realised that there is no secret to a high score other than practice. I practiced at least more than 3000 questions after my second attempt and scored a 690 on third, with a respectable IR and AWA score. I felt that I could have easily broken the 700 barrier if I had taken more mocks in the preceding month(stopped taking mocks in the last month, last mock score GMAT prep-720) to build my endurance. That thing was the only reason that stopped me from scoring higher in Verbal in my final attempt.
Also over the course of my last three attempts, I have felt that the Quant on the GMAt is getting tougher each day. I scored 50 in my first to 47 in second to 49 in third. So, my tip on those strong in quant and weak in verbal, don't let your guard down in Quant ever, because that is the only section that will take your score higher, not the verbal. Compare the percentile differences between Q50 and Q49 viz two consecutive scores in Verbal, and you will know why I said so.
My final word is "keep practicing". If you have already spend money on a test prep company and did not succeed, then don't waste money on any other. There is no special GYAN that any company can provide you now. Second, Mocks are only to build endurance and not predict your success, you can score a 660 on your final mock and still reach near to 700 on the real test, or vice versa, as all prep company put their questions on different levels. Finally keep taking mocks till the last week before exam and practice each section(Q, V and IR) daily to maintain your strengths at the acquired level. Hope that helps!!