You should write your own, because writing notes helps you absorbe information far better then merely reading them. However, another persons notes can also be very useful, especially when writing your own notes because they can show you what information is important, where to focus your detail etc.is it better to read over someones notes that got a band 6 OR do your own legit ones that you understand that usually get you a band 4? OR you can do both
*rocks your boatWhatever works for you.