Currently, I’m prepping with Barrons and Dr. Chung’s. I got an 800 on the Barrons diagnostic test and consistently get 730-740 on model tests. Dr. Chung’s is a little easier (I cut my time to 55 minutes for Chung’s and I still do better than on Barrons, which I tank even though I use the full hour) and I get same range or higher, today I got a 780 :D. Also today I took http://www.cracksat.net/sat2/math// (4th link of the bottom section, called SAT Subject Math Level 2 Practice Test from Official Study Guide) this exam today and got an 800 (it says it’s an actual administered recent test but I’m a little doubtful, can someone attest to how similar the difficulty level is?) My question is, what book is the most accurate? Should I be using the easier books like Kaplan because what if I forget how to do the easy questions? I never formally learned (or maybe i just forgot, i don’t recall ever learning them), for example, the formula for the volume of a cylinder, among other geometric figures (yes i know i’m trying to memorize them because obviously they’re important, but I’m worried something easy will pop up that i totally forgot how to do. Also I don’t know if it’s worth studying every little thing like the binomial theorem. Any help is appreciated! 