Highlighting:
Evernote Premium version: MacPro, very easy to do. PDF note. Select the note, highlight the text, right click, Format, Highlight and done! Neat and tidy! Even if you select a whole line, with non-printing space, it only highlights the text.
iPad Pro: The highlight appears nicely but I can't find a way to highlight on the iPad Pro! The double exclamation marks did nothing, even on the MacPro.
Frustrating as it would be very helpful to highlight on the iPad Pro!