Hi I know this question has been asked before, but how different are MGMAT 5th edition guides from the 4th Edition? I've downloaded the package of all MGMAT's 4th edition guides for free but I did not manage to find anything on the 5th edition guides.. If there is more than 10% difference between the edition, i would need to purchase the 5th edition guides as I aspire to do well on the test and get the latest tips/strategies! Also, can anyone tell me if there is a place where I could download the 5th edition guides? Your feedback would be much appreciated!