We're all different in various ways but I had the same experience as GP. I used to believe in notetaking from lectures and discovered comprehension and memory was much better when I actively listened instead of trying to either copy or process the lecture onto paper.

And, really, there's no substitute for coming to class prepared (by reading ahead or whatever). It makes the lecture process much more useful. In that sense, a list of notes of things you don't think you understand from preparation is probably helpful.