guys, u are not alone...same is my story too...took gmat couple of days ago...and i scored 650(Q50, V27).
My practice scores from GMAT prep/Power prep are all well above 700 except one 660.
As far as i am concerned, i strongly feel that apart from strategies from Manhattan SC, gmat has also started testing few other basic concepts like usage of ',' and 'and'. so i feel its better to hone yourself with basics of grammar apart from digesting Manhattan Sc and OG11.... i have already started doing it btw....
Remember, winners never quit until they reach their destination....
Its easier said than done .."WOrk on thy Weakness"
Best of luck to you guys and wish me the same too
