<<Also, if anyone can tell me is Topscore personal tutor is worth the 500 bucks for two months?>>
Not to me. You can achieve a good score with
OG and Manhattan SC books. (Cost: $50 US).
I was able to get GMAT 640 with V42/Q34. My verbal was 60%-65% before Manhattan SC but I got V96% on actual GMAT after Manhattan SC. A good verbal increases your overall score more than a good quant. I'm certain I can score at least V44 Q48 next time. My goal is 720.