Is Peterson's a good study guide to use for the GRE?

Please reply asap as this is urgent. I've been using Peterson's to prepare for my general subject GRE test which is on September 9th for a while now but my cousin who aced her GRE's (just started her master's at Harvard University last month) recently suggested that I use the Princeton Review, Kaplan or Barron's. She didn't mention Peterson's so I don't know if I should take that to mean that Peterson's is not a very good guide to use for studying.