Better than Preview

I was happy using Preview before El Capitan, but with the latest offering from Apply I had to find something better. PDF Expert is very good at marking up PDF documents. Very responsive and easy to mark multiple edits exactly where you want them. It needs some refinement working with network storage like iCloud/Dropbox/etc. I get export errors or connection errors when trying to move documents between services using the PDF Expert interface.

MontegoStar about PDF Expert – Edit, Sign PDFs, v1.4.1