Took GMAT CAT today and scored 750 in the test. I noticed that Quant was a bit tougher than in the TestPreps. English more or less is of the same level of difficulty. I used to foll: resources for practice
OG 11 (very important and did it twice)
Princeton Review
Tests
MGMAT 2: 700
MGMAT 4: 740
MGMAT 5: 760
MGMAT 6: 740
mba.com TestPreps
Scored 740 in both the tests