I have used McMillan's PDG GOLD every time I have tested for promotion. I wouldn't have been able to make any of my ranks without McMillan's study guides.

I got promoted to MSgt on 1 Aug 2010. Thanks. (Master Your CDC)

I used the Master the PDG flashcards and they came in handy because I was able to take them everywhere with me. I scored 10% higher than everyone else in my career field.