The first time around I just used a few Kaplan books and didn't even really look at them very closely. I didn't read any of them straight through. It may not have been taking it blind, but maybe taking it legally blind.
Second time around, I used this forum, Powerscore CR BIble,
MGMAT SC Guide, OG11 (all 3 books), GMATPrep 1 & 2. and a few other CAT's but I forget the names of them. I studied on my lunch breaks, and at night. Total time spent studying was about 200 hours or so from late April to late July. I put in about 25 hours a week. It was nuts, but it paid off.
duuuma
My friend was killing the GMATprep practices on math (high 40's-50) and felt the real test was much harder. She still scored a 44, so it might just be her perception or nervousness.
jallenmorris - that's a great score you improved to. I scored a 670 on my first attempt last year and am looking to break into the 700's also. I'm curious to know, what did you use to study the 2nd time around and what was your regiment?