@ hopeful - I don't know anything about the Roger Cram, but I would think any Cram would be sufficient as long as you take the time to really go over the suggested MCQ's and SIMS on your own.
In my own experience, I enjoyed the extra hand-holding the full course did especially with going over the problems. But then I purchased the Cram because I learn best by listening and watching, but didn't have time (or patience) to watch the full course again or fast-forward through the parts I didn't need to watch again.
I think you will have to weigh the time/benefit of the shorter course versus the longer course and make your decision that way.
FAR - 84 (Yaeger) 11/2011
AUD - 94 (Yaeger + NINJA notes) 2/2012
BEC - 5/29
REG - August