Hi CAREY33,
Practice CAT scores are only as realistic as YOU make the process of taking the CAT. The more the 'CAT-taking event' deviates from what you'll face on Test Day, the more likely the score is to be inaccurate (and in most cases, that means "inflated").
Here are some details to consider when you took each of your CATs...
1) Did you take the ENTIRE CAT (including the Essay and IR sections)?
2) Did you take it at home?
3) Did you take it at the same time of day as your Official GMAT?
4) Did you do ANYTHING during this CAT that you couldn't do on Test Day (pause the CAT, listen to music, etc.)?
All things being equal, the Kaplan CATs (when used correctly), will provide you with a reasonably accurate assessment of your skills.
1) Have you taken any of the GMAC CATs yet? If you have, then how did you score?
2) What is your goal score?
3) When are you planning to take the GMAT?
GMAT assassins aren't born, they're made,
Rich