Hi davidbeckham,
While the most realistic CATs available are the 6 from GMAC, retaking a CAT that you've already taken is NOT a realistic way to assess your skills - since you will likely see some 'repeat' questions that you have already faced. Unfortunately, seeing even a couple of repeats can 'throw off' the Scoring Algorithm and impact your pacing, energy levels, fatigue, etc. (meaning that they would likely all appear to be better than they actually are). Each 'pool' of questions that comes with a practice CAT will be 'limited' by design - since there's not much of a reason to place lots and lots of questions into a pool (as most of those questions would never be seen). Thankfully, the CATs from Kaplan,
MGMAT and Veritas are all 'close enough' to the real thing that they will provide you with a relatively realistic score assessment (assuming that you correctly take the CAT in a realistic fashion) - so you can use any NEW CATs from any of those sources next.
From your post, I assume that you're looking to take additional CATs. It's worth noting that a CAT is really a 'measuring device' though - when used correctly, it will give you a realistic score and help define your strengths and weaknesses, but it will NOT help you to fix any of those weaknesses. To raise your scores, you have to learn the necessary Tactics and put in the proper practice and repetitions. The CAT will show you whether your studies are helping you to improve or not. As such, you really shouldn't take more than 1 FULL CAT per week.
1) On what dates did you take EACH of your CATs/mocks so far and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
2) What is your overall goal score?
3) When are you planning to take the GMAT?
GMAT assassins aren't born, they're made,
Rich