The main reason I switched to DevonTHINK is its masterful handling of PDFs; there are, however, two small areas that could be improved.
The main issue is that when saving/converting to a Multi-Page PDF, text is often cut in half at the boundary between pages. i.e. Instead of starting a line on the next page, the letters are split between the bottom of the current page and the top of the next page. This is basically a dealbreaker for using the Multi-Page format, as it can render key lines of text unreadable.
The other issue is that using Convert to PDF on notes only converts to Multi-Page PDFs (which can cause the issue mentioned above). It would be useful to be able to convert notes into One-Page PDFs from within DevonTHINK (just like the option in the Web Clipper).
Most recently it was Formatted Notes imported from Evernote - though I have also noticed this with the Web Clipper. When saving as a Multi-Page PDF, the text is often chopped in half at the start/end of pages.