One man's opinion: PS: Kaplan Was more difficult/easier scoring than AAMC but matched up to the real deal much more than AAMC. There was a little less calculations on the real, but Kaplan is great prep for it (wish i did more of them). Best Prep: Kaplan VR: Kaplan is terrible. Way to detail question oriented. Theirs are tailored to work with their strategy. Honestly I didn't give their strategy a fair shake but I challenge you to find anyone who got over a 10 and actually used this nonsense. Don't waste your time unless you are getting less than 9s on this. EK and AAMC are the way to go. Best Prep: AAMC/EK BS: Fine, pretty much the same as AAMC. The only thing to watch is the repitition. If you only did these you'd think every MCAT has a hemoglobin curve and a forty questions on the nervous system. On the other hand the AAMC lead you to believe the orgo will be very easy and barely covered. The real deal I took in May had some very specific topics. Not what was on it but good examples: Michael Addition, Ylide, etc. I completely skipped studying orgo because it was so easy on the AAMCs. Best Prep: Tie AAMC/Kaplan People often talk about an initial score drop when switching from Kaplan to AAMC FLs. Don't worry about it. It's just getting used to a slightly different style. Do both because the real one is somewhere between the two.