Hi kjakhar,
These various CAT results are fairly similar to one another - so you certainly appear to be consistently performing at the same level. When you take a CAT, if your goal is to receive a realistic score assessment, then you really have to be strict about HOW you take 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"). As such, the accuracy of these CAT Scores comes down to the details of how you took the CATs.
For example, did you take the FULL CAT each time - with the Essay and IR sections? Did you take it away from your home and at the same time of day as when you'll take the Official GMAT? Did you do anything unrealistic (such as pause the CAT or run into questions that you already knew the answers to)? Etc.
Before I can offer you any additional advice for your studies, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied in total?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich