I actually agree with buying the older editions for some courses. but, it depends on the course, because the opinions that are edited for certain courses are easy to self-edit, but are really difficult for other courses. For example, the average conlaw opinion is around 100 pages. Compare and contrast that with the average torts or contracts opinion, which are around 8 pages on avg and very easy to edit...i edited some opinions for corporations and they weren't bad, but not bus. assoc. however, i would assume they are similar. your call...little has probably changed and the published opinions are prob short. pull a few and see.