Depends on when you're planning on taking it. If you're not going to take it until after it comes out... then wait to buy it. The 2010 KBB was sufficient, but people have noted there were errors. KBB was pretty good with QR and PAT section IMO as well as giving me an outline on what I needed to know for the DAT. Ochem and Gchem can be learned using Chad's and checking your understanding with destroyer. Finally, RC could be done with hardly any practice. Although I did find that if you have a strong bio background, you could have some understanding for some of the topics making reading/understanding a lot easier.