I'm using it, and I like it. It's very detailed and you get lots of good practice which is essential to the MCAT. I probably wouldn't order it by itself though because there is no sociology in TBR and they admit to this. If you're looking for comprehensive review of the P/S section, use TPR, KA with 100 page guide from reddit. However, TBR is amazing for the physical sciences and overlap to biological sciences, so I would definitely consider ordering their whole book set if you are just starting out on content review.