I am currently ordering supplies to start studying for the MCAT, and I have seen many favorable reviews for TBR content books. I went on their website to order, but some of their stuff is from 2018 and some from 2019. I looked for the newest versions, but could not find them. Are these the most updated one? Are they even a reliable content review method? Honestly, if not for the countless reviews I have seen, they would not have been my first choice.