I took the GMAT's on 2/15 and ended up with a 660. My goal was for 700+ so I'm looking to retake the GMAT's in a month's time. Prior to my first test, I took 6 of the MGMAT CAT's and the two exams from GMATPrep (v1.2). I'm planning to reevaluate my study plan and method of attacking the exam. I'm looking for additional CAT's and welcome any suggestions. I feel at this point, reusing the MGMAT CAT's wouldn't be accurate since I've been exposed to the questions. Does anyone have suggestions as to where I can find other CAT exams? I've already downloaded GMATPrep (v1.1) and Powerprep, but could probably use a few others. Would Kaplan/any of the other exam preparers be worthwhile to use? I also know there are GMAC disclosed exams floating around, would those be worthwhile to use? I notice they jump from quant to verbal, back to quant and so on. They're also paper (pdf) exams so I would have trouble mimicking testing conditions, although they are OG questions.

Any thoughts would be appreciated, thanks in advance.