<p>Hi!
I’m wondering if I should purchase another prep book for AP Biology (since the test is being revamped). I currently have the Cliff’s 3rd Ed and I found out that the [Cliffs</a> 4th Edition](<a href=“http://www.amazon.com/CliffsNotes-AP-Biology-Cliffs-Ap/dp/1118127994/ref=zg_bsnr_11672_11]Cliffs”>http://www.amazon.com/CliffsNotes-AP-Biology-Cliffs-Ap/dp/1118127994/ref=zg_bsnr_11672_11) will be coming out in April 
So, I’m not sure what other book I should purchase for the time being. I know the Kaplan and PR ones came out, are they reputable? I was reading the reviews on the PR one, the general impression is that it’s almost identical to previous versions.</p>
<p>Thanks! :D</p>