The ABA website should have all of the pertinent details of the exam.
I'm not sure how the AKT's vary with each other, because at Southwestern, we found no utility for using them other than the AKT 6 for a mid CA-1 evaluation. Twice a month, we provide topic specific question and answer sessions which emphasize understanding the fundamentals of each topic and how to attack the questions as opposed to using the AKT's.
After just a year with this, our scores among all classes jumped tremendously (CA-3 class scored 90th percentile nationally and most would have already passed the exam if taken for real this past year).
You are correct, I am a CA-3 and I am torn between wanting to do a fellowship but having so many lucrative offers from local and west coast groups that all seem to be too good to be true. It is a nice dilemma to have, but I can't believe how depressing it can be not being able to make up your mind. On top of that, one of the local groups took me out to dinner last night and made my decision making even more difficult with all of the factors that they presented about their group (family oriented, minimal call - most not in house, great, GREAT income, great location, etc.). I'm hoping that by next month, I will have decided and started negotiating the details of the contract.
Are you or anyone else facing the same dilemma? I keep trying to talk myself into doing a fellowship, but can't seem to talk myself into another year of education.