Which act/sat book is better?

<p>The princton review? Or kaplan?? And if you have... Or had used any of these... Did they help you?? Did they bring your score up? By how much??
Thanks!! Sorry for the caps haha im not sure why its in caps... My key is screwed up.. Im gooing to need to fix that haha.</p>

<p>kaplan and princeton review r pretty much same. i used both of them and they contain similar practice problems. but official sat study guide has most accurate info and stuff like that cuz its from collegeboard. well i havent retaken sat yet so idk if they will bring my scores up. im still studying them over the summer. for act i think there similar also but try getting the real act prep guide if u can. peterson should be ok too</p>