This is all personal preference, however ...
I think that the SAT books were more like those that you see on the PCAT. The GRE word list is helpful and will surely build your vocabulary; However, the words are at a level higher than what is necessary for the PCAT.
I took the GRE years ago (2003) and I memorized prefixes, suffixes, word roots, all sorts of stuff and scored in the mid-600s. (Not amazing, but I was happy since I was scoring 500 on the practice exams.) Honestly, I would have been furious if I had repeated such effort for the PCAT since I made a marginal effort towards that section and scored 92 on the Verbal section of the PCAT. (Of course, some of my score could have been carry over from my previous studies, but I digress ... )