Clean, great tagging/filtering, supports all file types, selective folder/list sync
(Initial) syncing can be sluggish
Great app, cross between "Everything drawer" (Devonthink) and note taking (Evernote). Cheap compared to both, well designed. I especially like
1. the tag-based filtering options,
2. that it uses the (macOS) file system (you can browse all lists in the Finder, tags are written to the files), and
3. that i can selectively sync (download) files and folders on iOS.
Also: Very fast response to my support questions.