I took the exam on Saturday and scored a 750 (Q47; V46; IR7; don't have AWA yet). I used EMPOWERgmat and highly recommend it to everyone, especially auditory learners. Quant is definitely my weakness and what I mostly focused on but the verbal videos are great too if that's an area of focus. I followed their 2-month study plan and took 7 practice CATS over the course of those 2 months (both from GMAC and 5 of the 6 from Manhattan). EMPOWER has video answer explanations for every single problem in the GMAT Official Guide, which is incredibly helpful.