Hi khushbugangadia,
You might find it difficult to find someone who's used each of those three Courses in their entirety, but there's still a way for you to make an informed choice:
Most GMAT Companies offer some type of free materials (practice problems, Trial Accounts, videos, etc.) that you can use to 'test out' a product before you buy it. We have a variety of those resources at out site (
www.empowergmat.com). I suggest that you take advantage of all of them then choose the one that best matches your personality, timeline and budget.
1) When are you planning to take the GMAT?
2) When are you planning to apply to Business School?
3) What is your goal score?
GMAT assassins aren't born, they're made,
Rich
