CD is the best, content vise.
In case you didn't notice it contains all questions from Kaplan
Math and Verbal Workouts too
It doesn't look professional at all. I wonder if it is too much to ask to hire one good programmer. Whoever designed Kaplan
package thinks that GMAT takes are either 2nd graders or retarded.
But the content is very good.
One assessment test, all workouts CR, RC, SC, DS, PS, 4 full tests. Rock on!