I ended up with a copy of the Qbook questions and found that it was nice for a couple of things:
1. The questions are sorted by discipline so if you are week in one area you can focus specifically on questions from that area.
2. There is more variance in the questions asked in the book. They dont ask the same questions from multiple angles like they do on Qbank.
If you have the extra time it is a good supplement but Qbank is definately number one.