Is the marrow ed 8 rev notes insufficient compared to marrow 6.5?

I had done a revision or two of marrow ed 6.5 rev notes during the last inicet prep. Now I've been skimming through ed 8 rev notes and watching a few videos to catch up on any latest updates. I can't help but notice the teachers mentioning more than once to read the main notes, the pages of the notes and duration of videos being cut down and some concepts just left untouched or incomplete . Especially, pharm and anat have reduced a lot of their content. Should I just stick to ed 6.5? I assumed the latest noted would have some updates but the trade-off of missing out on material doesn't seem worth it. Any views on this?