both of them are kinda mid ngl but if you have to pick between the two, use bio in focus (don’t bother with pearson, it has a lot of info that’s useless and isn’t relevant to the bio hsc course - so does in focus but a lot less). but i thought the a+ hsc bio study notes were better though than the other two because it doesn’t include all that irrelevant info, concise but has all the info and has good case studies