@mrwills12 - I know you weren't asking me, but another person answering your questions couldn't hurt, right?
I studied using Becker for REG and have failed twice now, with a 74 and a 73, OUCH! I did fine on the MCQs, but the SIMS this last time were horrendous; very involved, detailed and somewhat obscure topics. I didn't feel like Becker had prepared me for them at all. I will also say that I DID make the mistake of trying to use the authoritative literature for the SIMS (which is difficult to navigate) and it was of no help, I should have known better having read this same advice from other test takers. Even my research question (which I usually nail) was difficult. I would leave plenty of time for the SIMS and just make sure you know the material backwards and forwards. I'm taking it again in January and re-studying with Yaeger and Wiley online test bank. Becker just isn't for me.
REG: 74, 73, 75!!!!!!!!!!! I'm DONE!