Honestly, studying for this test has been my best experience so far in med school. I have plenty of time to study what I need to without being interupted by stupid small groups or token "clinical experiences" that do little to actually prepare you for the wards since you don't really know anything yet. The material I'm studying is straight-forward and real progress can be effectively assessed as opposed to studying endlessly all the minutiae in the lecture slides, only to discover that the PhD lecturer felt it was necessary to write test questions regarding his/her recent, unvalidated research that they mentioned anecdotally between relevant topics. Lastly, the material is finite, without new stuff to keep up with while trying to master the current topic.
Overall, I much prefer to study for boards.