I have noticed the difference in resolution from zz to bluebeam. It isn't terrible but it is more noticeable as I age! Any simple reason for this?
zzTakeoff: Bluebeam:


zz doesn't work directly with PDF files, while bluebeam does. zz exports the PDF files into images, that's the reason for the difference in resolution quality.
Optional quality selection per page might be worthwhile?
As scale will have a big impact, say a large slab being out by a few mm will actually make a difference, whereas on other plans it may not be that important to be precise.