Lurked in the prep section a bit last week, so thought I would add my experience.
Got a 730 96%
Quants 45 78%
Verbal 45 98%
My biggest concern was waking up in time as the test was at 8 AM. That is normally la-la land time. Kinda embarrassing for an engineer to have sucked in the quant section

but hey. Did finish the Manhattan sentence correction book, which I have to say is rather good. Anyone know if schools weigh in the quant% when doing admissions? Should I be worried about it?
Things I leanred. Joe Bloggs has to be retarded. Watching an episode of scrubs for every 1.5 hours spent on preparation is therapeutic and my case seems to have helped. . Jobs cramp your style. Expect 2 hrs of useful prep on a workday and 6 on weekends.