Not really... as long as it's recent, no one really knows exactly what will be on the random edition you're given anyway -- the source material is outdated. Your best bet is probably to get the official guide and do all 7 practice tests along w/ the 2 CATs on the Power Prep CD. A good review from an used Princeton Review bk will help and you can do one free CAT on the Princeton's Review's website in addition to all the others. That will likely be plenty of study material. I wouldn't spend any more time than that on the GRE as once you're above 1300-1400 or so, it really doesn't make much of a difference anyway as I understand.