hoping to be able to annotate PDF's also.
PDF readers
GoodReader
-- With GoodReader on your iPad/iPhone, you can read virtually anything, anywhere: books, movies, maps, pictures.
-- sync with Dropbox, OneDrive, SugarSync and any WebDAV, AFP, SMB, FTP or SFTP server
-- The types of annotations that can be created and edited in GoodReader include typewriter text boxes, popup comments ("sticky notes"), text highlights, freehand drawings, lines, arrows, rectangles, ovals, cloudy shapes, text underlines, strikeouts, text insertion marks.
http://www.goodiware.com/
PDF Expert – the PDF handling app for the iPad. "It allows you to markup documents with highlights and handwriting, insert text and stamps, sign and even merge PDFs."
https://itunes.apple.com/us/app/pdf-expert-5-fill-forms-annotate/id743974925?mt= 8
iAnnotate – turns your tablet into a world-class productivity tool for reading, marking up, and sharing PDFs, Word documents, PowerPoint files, and images. Has a secure document edition designed for corporations.
http://www.branchfire.com/iannotate/